Pashok's questions

出现了无法理解的情况。将值传递false给常规函数时，默认值 =null正确分配或输出的值：

function some(?bool $a = null)
{
    var_dump($a);
}

some();
some(true);
some(false);

结果：

NULL
bool(true)
bool(false)

但是，当我尝试通过 将相同的参数传递给控制器​​参数时，返回的route值是，因此给出了不正确的结果。是什么原因造成的？也许 codeigniter在参数中 以某种不同的方式处理它？-s：falsetruefalseRoute

$routes->get('default', 'Results::index');
$routes->get('successful', 'Results::index/true');
$routes->get('errors', 'Results::index/false');

控制器：

public function index(?bool $decline = null)
{
    var_dump($decline);
    exit;
}

结果：

NULL
bool(true)
bool(true)

我正在使用4个codeigniter。第一次进入页面时，需要将代码写入会话中，然后在用户提交表单时，将此代码与会话中的代码进行比较。为了检查，我在其中显示会话view并且它与代码匹配，但是，用于比较的会话中的值结果被写入了另一个值，并且不清楚它来自哪里。我清理了会话，并Flashdata使用了它，然后停止了它并再次启动了会话，仍然写入了一个随机值。但是，如果您使用var_dump-th 强制会话退出控制器，或者只是重新启动页面以覆盖该值，则比较两个必要的代码并且一切正常。可能是什么问题呢？会话在构造函数中连接。

控制器特点：

public function __construct()
{
  $this->session = \Config\Services::session();
}

public function index()
{
  $userCode = $this->request->getPost("userCode");
  $codeSession = $this->session->get("code");
  if(!empty($userCode))
  {
    if($userCode == $codeSession)
    {
      return redirect()->to('/Home');
    }else{
      // Для проверки значений. При первом посте - мусор, при последующих нужный код
      var_dump($codeSession);
    }
  }else{
    // Тут даже при первом заходе на страницу уже есть код почему-то
    $this->session->has("code") ? $this->session->remove("code") : '';
  }
  
  $this->generateCode();
  $data['codeSession'] = $this->session->get("code");
  // var_dump($this->session->get()); -> Так сработает и при первом запуске.
  // Без вывода надо перезапустить страницу чтобы код опять переприсвоился.
  return view("/pageWithCode", $data['codeSession']);
}

private function generateCode()
{
  $code = "Some random code";
  $this->session->set("code", $code);
}

您需要更新向量元素的数据。为此，我使用了一个函数find并通过比较find_id，但编译器给出了一个错误：

...xutility(5112,21): error C2676: binary '==': 'Solder' 未定义此运算符或转换为内置运算符可接受的类型

...xutility(5147): message : выполняется компиляция ссылки на экземпляр шаблон функции "_InIt
 std::_Find_unchecked1<_InIt,_Ty>(_InIt,const _InIt,const _Ty
 &,std::false_type)"
with 
1>        [ 
1>           
1>            _InIt=Solder *, 
1>            _Ty=find_id 
1>        ]

在找到元素之后，我们通过它的方法更新它的数据。士兵的等级减少了，只剩下必要的了。在组类中，values是一个带有数字的向量，该数字是类中的一个字段Solders和一个名称number。

class Solder
{
private:
    int counterForUpdate;
    string* name;
public:
    int number;
     //конструктор
    Solder(string name_in = "Неизвестно", int number_in = 0)
    {
        name = new string(name_in);
        number = number_in;
    }
    void update(int counter){
        counterForUpdate = counterForUpdate + counter;
    }
};

struct find_id : std::unary_function<Solder, bool> {
    int number;
    find_id(int id) :number(number) { }
    bool operator()(Solder const& ms) const {
        return ms.number == number;
    }
};

class Group
{
private:
    std::vector<Solder> solders;
public:
    void addSolder(string name, int number)
    {
        Solder newSolder(name, number);
        solders.push_back(newSolder);
    }

    void updateStates(int count, int result, std::vector<int> values)
    {
        std::vector<Solder>::iterator it;
        for (vector<Solder>::size_type i = 0; i != count; i++)
        {
            it = std::find(solders.begin(), solders.end(), find_id(values[i]));
            if (result == 0)
            {
                it->update(0);
            }
            else
            {
                it->update(2);
            }
        }
    }
};

我做了一个班级Solder，现在这个士兵必须从班级中添加和解雇Group。编译器不会对 add 方法发誓，但是当涉及到解雇时，您必须首先找到指向它的指针。在查找时，编译器会输出错误член "Group::solders" не является именем типа。如何摆脱它？课程如下：

class Group 
{
private:
    std::vector<Solder> solders;
    string* name;
    int countWin;
    int countLose;
public:
    //конструктор
    Group(string name_in = "Неизвестно")
    {
        name = new string(name_in);
        countWin = 0;
        countLose = 0;
    }
    //деструктор
    ~Group()
    {
        cout << "Удаление из памяти " << *this->name << endl;
        solders.clear();
        delete name;
    }

    void addSolder(string name, int number)
    {
        Solder newSolder(name, number);
        solders.push_back(newSolder);
    }

    void firedSolder(int number)
    {
        std::vector<Solder>::iterator it;
        // Пытаюсь найти место где находится солдат с нужным номером в векторе
        it = find_if(solders.begin(),
            solders.end(),
            [&cm = number]
        (const solders& m) -> bool { return cm == m; }); //Ошибку тут показывает
        
        solders.erase(it);
    }
};

class Solder
{
private:
    string* name;
    int number;

public:
    //конструктор
    Solder(string name_in = "Неизвестно", int number_in = 0)
    {
        name = new string(name_in);
        number = number_in;
    }
    //деструктор
    ~Solder()
    {
        cout << "Удаление из памяти " << *this->name << endl;
        delete name;
    }
    //возвращаем номер солдата
    int getNumber()
    {
        return number;
    }
};

有一些图形数据，在选择项目时有必要制作板的外观。但是标准函数不支持html格式的表格标题，虽然图表标题正常支持。我通过在菜单中添加一个新按钮来做到这一点menuItemDefinitions，exporting但是如何在选择后覆盖其文本？与标准输出一样，它是必要的。改为View data table，Hide data table反之亦然。我们现在拥有的代码和我们想要的照片如下所示：

var html = '<div style="display: inline-block"></div>';
html += '<div style="display: inline-block; margin-left: 20px; cursor: pointer;" class="description-title" id="">';
html += '<img style="width: 20px;" src="https://img.icons8.com/ios/500/info--v1.png" alt="Info">';
html += '</div>';
new Highcharts.Chart({
 chart: {
    renderTo: 'chart_1',
    type: 'column',
    height: 350,
 },
 title: {
    text: html,
    useHTML: true,
 },
 xAxis: {
    categories: ['Processing.js', 'Impact.js', 'Other', 'Ease.js', 'Box2D.js', 'WebGL', 'DOM', 'CSS', 'Canvas', 'Javascript']
 },
 yAxis: {
    title: {
       text: 'Опрошено'
    }
 },
 series: [{
    name: 'Dev #1',
    data: [5, 10, 20, 22, 25, 28, 30, 40, 80, 90],
    color: '#FF0000',
    states: {
        inactive: {
            enabled: false
        }
    }
 }, {
    name: 'Dev #2',
    data: [15, 15, 18, 40, 30, 25, 60, 60, 80, 70],
    states: {
        inactive: {
            enabled: false
        }
    }
 }, {
    name: 'Dev #3',
    data: [1, 3, 6, 0, 50, 25, 50, 60, 30, 100]
 }],
 exporting: {
        menuItemDefinitions: {
            // Custom definition
            label: {
                onclick: function() {
                  if (this.dataTableDiv && this.dataTableDiv.style.display !== 'none') {
                    this.text = "View data table";// Присваивается, но не отображается в меню
                    this.dataTableDiv.style.display = 'none';
                    this.dataTableDiv.querySelector(".highcharts-table-caption").innerHTML = html;
                  } else {
                    this.viewData();
                    this.text = "Hide data table";// Присваивается, но не отображается в меню
                    this.dataTableDiv.style.display = '';
                    this.dataTableDiv.querySelector(".highcharts-table-caption").innerHTML = html;
                  }
                },

                text:"View data table",
            }
        },
        buttons: {
            contextButton: {
                menuItems: ["viewFullscreen", "printChart", "separator", "downloadPNG", "downloadJPEG", "downloadPDF", "downloadSVG", "separator", "downloadCSV", "downloadXLS", 'label']
            }
        }
    }
});

.actions, .chart {
    margin: 15px auto;
    width: 820px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>
<script src="https://code.highcharts.com/accessibility.js"></script>
<div id="chart_1" class="chart"></div>

有表：

users

+------------+-------------------+------+-----+---------+----------------+
| Field      | Type              | Null | Key | Default | Extra          |
+------------+-------------------+------+-----+---------+----------------+
| id         | int unsigned      | NO   | PRI | NULL    | auto_increment |
| date       | datetime          | NO   |     | NULL    |                |
| refererId  | int               | YES  |     | NULL    |                |
+------------+-------------------+------+-----+---------+----------------+

和表actions

+------------+------------------+------+-----+---------+----------------+
| Field      | Type             | Null | Key | Default | Extra          |
+------------+------------------+------+-----+---------+----------------+
| id         | int unsigned     | NO   | PRI | NULL    | auto_increment |
| userId     | int unsigned     | NO   |     | NULL    |                |
| refererId  | int unsigned     | YES  |     | NULL    |                |
| added      | datetime         | NO   |     | NULL    |                |
| amount     | int unsigned     | NO   |     | 0       |                |
| commission | int unsigned     | NO   |     | 0       |                |
| onHold     | tinyint unsigned | NO   |     | 1       |                |
+------------+------------------+------+-----+---------+----------------+

如何获取按日期分组的注册和操作数量？在表中为每个操作actions创建一行。我添加了两个内部函数并尝试将表名放在计数的 ifs 中，但仍然不是我需要的。我试图这样做，但它只返回当天的活动：

SELECT COUNT(if(amount > 0,1,NULL)) 'actions', COUNT(if(DATE(added) = DATE(date) AND amount != 0,1,NULL)) 'registration',  DATE(added) AS added, SUM(amount) AS amount, SUM(commission) AS comission
FROM actions
INNER JOIN user ref ON ref.id = actions.refererId
#INNER JOIN user use ON use.id = actions.userId
where actions.refererId = 1 AND onHold = 1
group By DATE(actions.added)

结果：

+-------+--------------+------------+--------+-----------+
| actions | registration | added      | amount | comission |
+---------+--------------+------------+--------+-----------+
|     3   |            0 | 2022-05-16 |    210 |        63 |
|     1   |            0 | 2022-04-28 |     15 |         2 |
+---------+--------------+------------+--------+-----------+

我试图这样做，但它只返回当天的注册：

SELECT COUNT(if(amount > 0,1,NULL)) 'actions', COUNT(if(DATE(added) = DATE(date) AND amount != 0,1,NULL)) 'registration',  DATE(added) AS added, SUM(amount) AS amount, SUM(commission) AS comission
FROM actions
#INNER JOIN user ref ON ref.id = actions.refererId
INNER JOIN user use ON use.id = actions.userId
where actions.refererId = 1 AND onHold = 1
group By DATE(actions.added)

结果：

+---------+--------------+------------+--------+-----------+
| actions | registration | added      | amount | comission |
+---------+--------------+------------+--------+-----------+
|      1  |            1 | 2022-04-28 |     15 |         2 |
+---------+--------------+------------+--------+-----------+

预期结果：

+---------+--------------+------------+--------+-----------+
| actions | registration | added      | amount | comission |
+---------+--------------+------------+--------+-----------+
|       3 |            0 | 2022-05-16 |    210 |        63 |
|       1 |            1 | 2022-04-28 |     15 |         2 |
+---------+--------------+------------+--------+-----------+

默认情况下，悬停会隐藏所有组中的所有其他列。我怎样才能使只有该组中的列在悬停时隐藏？我在文档中找到了悬停事件，并获取了列（左上角），但是如何用它隐藏它？也许通过tooltip什么？

现在如何工作 的一个例子：它应该如何工作的一个例子：

chart1 = new Highcharts.Chart({
 chart: {
    renderTo: 'chart_1',
    type: 'column',
    height: 350,
 },

 title: {
    text: 'Планы разработчиков по созданию HTML5 игр с помощью разных инструментов(в %)'
 },
 xAxis: {
    categories: ['Processing.js', 'Impact.js', 'Other', 'Ease.js', 'Box2D.js', 'WebGL', 'DOM', 'CSS', 'Canvas', 'Javascript']
 },
 yAxis: {
    title: {
       text: 'Опрошено'
    }
 },
 /*tooltip: {
   shared: true,
   split: true,
 },*/
 plotOptions: {
   series: {
            point: {
              events: {
                mouseOver: function() {
                  var chart = this.series.chart;
                  if (!chart.lbl) {
                        chart.lbl = chart.renderer.label('')
                            .attr({
                                padding: 10,
                                r: 10,
                                fill: Highcharts.getOptions().colors[1]
                            })
                            .css({
                                color: '#FFFFFF'
                            })
                            .add();
                    }
                    chart.lbl
                        .show()
                        .attr({
                            text: 'x: ' + this.x + ', y: ' + this.y
                        });
                }
              }
            },
            events: {
                mouseOut: function (){
                    if (this.chart.lbl) {
                        this.chart.lbl.hide();
                    }
                }
            }
        },
        column: {
          groupPadding: 0.1,
          pointPadding: 0.1,
          borderWidth: 0,
          events: {
            mouseOver: function() {
              console.log("1");
            }
          }
        }
 },
 series: [{
    name: 'Dev #1',
    data: [5, 10, 20, 22, 25, 28, 30, 40, 80, 90]
 }, {
    name: 'Dev #2',
    data: [15, 15, 18, 40, 30, 25, 60, 60, 80, 70]
 }, {
    name: 'Dev #3',
    data: [1, 3, 6, 0, 50, 25, 50, 60, 30, 100]
 }]
});

.actions, .chart {
    margin: 15px auto;
    width: 820px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
<div id="chart_1" class="chart"></div>

有一个功能可以完美地将数据写入文件并即时保存。唯一的问题是，当我尝试resultArray通过 fputcsv 格式化数据时，它无法执行此操作并返回：

*** 的网页可能暂时不可用或永久移至新地址

但是，对于更简单的数组，selectedColumn一切正常。下面是代码和resultArray. 我不明白为什么会这样。也许数组没有正确组合并且因此无法格式化？

编码：

function checkEmptyField($field)
{
  if(empty($field))
  {
    return '-';
  }else
  {
    return $field;
  }
}

$nameFile = 'keywords.csv';
$handle = fopen("php://output", "w");
        
header('Content-disposition: attachment; filename='.$nameFile);
header('Content-Type: text/csv; charset=UTF-8');
        
// Create head of table
$selectedColumn = [];
foreach ($clientColumns as $key=>$val)
{
  if($val == 1)
  {
     $selectedColumn [] = $key;
  }
}
      
// Create body of table
$resultArray = [$selectedColumn];
foreach ($keywordsCharacteristic as $fields) 
{
   $tempRow = [];
   foreach ($selectedColumn as $column)
   {
      switch ($column) {
        case "features":
          $tempRow [] = $fields['serpFeatures'];
          break;
        case "position":
          $tempRow [] = checkEmptyField($fields['position']);
          break;
        case "traffic":
          $tempRow [] = checkEmptyField($fields['traffic']);
          break;
        case "volume":
          $tempRow [] = checkEmptyField($fields['volume']);
          break;
        case "CPC":
          $tempRow [] = checkEmptyField($fields['cpc']);
          break;
        case "url":
            $tempRow [] = checkEmptyField($fields['pageUrl']);
            break;
        case "checked":
          $tempRow [] = checkEmptyField($fields['checked']);
          break;
        }
      }
      $resultArray [] = $tempRow;
}
var_dump($resultArray);
//fputcsv($handle, $resultArray);
fclose($handle);
exit();

关于resultArray. 即使我删除了 对应的字段features，也不会有结果，尽管数组将变得与文档中的示例相同，只是更大。

字段匹配features：

[0]=>
    array(2) {
      [0]=>
      array(3) {
        ["key"]=>
        string(7) "reviews"
        ["img"]=>
        string(11) "reviews.png"
        ["name"]=>
        string(7) "Reviews"
      }
      [1]=>
      array(3) {
        ["key"]=>
        string(15) "relatedSearches"
        ["img"]=>
        string(12) "Searches.png"
        ["name"]=>
        string(16) "Related Searches"
      }
    }

array(3) {
  [0]=>
  array(7) {
    [0]=>
    string(8) "features"
    [1]=>
    string(8) "position"
    [2]=>
    string(7) "traffic"
    [3]=>
    string(6) "volume"
    [4]=>
    string(3) "CPC"
    [5]=>
    string(3) "url"
    [6]=>
    string(7) "checked"
  }
  [1]=>
  array(7) {
    [0]=>
    array(2) {
      [0]=>
      array(3) {
        ["key"]=>
        string(7) "reviews"
        ["img"]=>
        string(11) "reviews.png"
        ["name"]=>
        string(7) "Reviews"
      }
      [1]=>
      array(3) {
        ["key"]=>
        string(15) "relatedSearches"
        ["img"]=>
        string(12) "Searches.png"
        ["name"]=>
        string(16) "Related Searches"
      }
    }
    [1]=>
    string(1) "-"
    [2]=>
    string(1) "-"
    [3]=>
    string(1) "-"
    [4]=>
    string(1) "-"
    [5]=>
    string(1) "-"
    [6]=>
    string(10) "2022-02-07"
  }
  [2]=>
  array(7) {
    [0]=>
    array(3) {
      [0]=>
      array(3) {
        ["key"]=>
        string(7) "reviews"
        ["img"]=>
        string(11) "reviews.png"
        ["name"]=>
        string(7) "Reviews"
      }
      [1]=>
      array(3) {
        ["key"]=>
        string(5) "tweet"
        ["img"]=>
        string(9) "tweet.png"
        ["name"]=>
        string(5) "Tweet"
      }
      [2]=>
      array(3) {
        ["key"]=>
        string(15) "relatedSearches"
        ["img"]=>
        string(46) "Searches.png"
        ["name"]=>
        string(16) "Related Searches"
      }
    }
    [1]=>
    string(1) "3"
    [2]=>
    string(1) "-"
    [3]=>
    string(1) "-"
    [4]=>
    string(1) "-"
    [5]=>
    string(1) "-"
    [6]=>
    string(10) "2022-02-07"
  }
}

如何删除列表中除最后一次出现之外的所有元素副本？下面的代码部分工作 - 仅适用于元素的一份副本。但如果元素在开头或重复超过 2 次，则会给出不同的错误。

列表的预期结果是2 3 3 2 4 5 6 5 -> 3 2 4 6 5。但是当我们尝试执行时，我们得到：Вызвано исключение: нарушение доступа для чтения. cur было 0xFFFFFFFFFFFFFFF7.per linefor (List* cur(head); cur && cur->next; cur = cur->next) {

示例 1：有一个列表2 3 4 5 3。执行后会正确 -> 2 4 5 3

示例 2：另一个列表3 2 4 5 3。执行后写的是1个元素被删除了，但是在尝试输出后，出现错误Вызвано исключение: нарушение доступа для чтения. p было 0xFFFFFFFFFFFFFFFF.就行printf("%d", p->value);

示例 3：有很多重复的列表2 3 4 3 5 3。执行后写的是2个元素被删除了，但是显示的是2 4 5

在我看来，错误在于传递head给函数的错误Delete_copy，但我不知道如何解决它。

struct List{
    int value; 
    List* next; 
    List(int val = 0, List* p = NULL) {
        value = val;
        next = p;
    }
};
List* Insert_first(int n, List* head){
    List* q = new List(n, head);
    return q;
}
List* Delete_value(int n, List* head)
{
    List* p = head, * t;
    if (head == NULL) { puts("LIST EMPTY!"); return NULL; }
    if (head->value == n)
    {
        t = head;
        head = head->next;
        delete t;
        return head;
    }
    while (p->next != NULL)
        if (p->next->value == n)
        {
            t = p->next;
            p->next = p->next->next;
            delete t;
            return head;
        }
        else p = p->next;
    puts("NO VALUE!");
    return head;
}
void Print_list(List* head){
    List* p = head;
    puts("\n PRINT LIST");
    if (p == NULL) puts("List empty!");
    else
        while (p != NULL){
            printf("%d ", p->value);
            p = p->next;
        }
}
int Delete_copy(int countRes, List * head) {
    std::vector<int> v;
    v.push_back(head->value);
    for (List* cur(head); cur && cur->next; cur = cur->next) {
        if ((std::find(v.begin(), v.end(), cur->next->value) != v.end()) && cur->next) {
            head = Delete_value(cur->next->value, head);
            countRes++;
            Delete_copy(countRes, head);
        }
        else {
            if (cur->next){
                v.push_back(cur->next->value);
            }
            else {
                return countRes;
            }
        }
    }
    return countRes;
}
void main()
{
    int i, k, n, num;
    char const * ss[] = { "\n 0-Print list"," 1-Insert first", " 2-Delete copy"," 3-EXIT" };
    char c{};
    List* head = NULL;
    k = sizeof(ss) / sizeof(ss[0]);
    for (;;){
        for (i = 0; i < k; i++) puts(ss[i]);
        scanf_s("%c", &c); 
        switch (c){
        case '0': Print_list(head);    break;
        case '1': printf("n = "); scanf_s("%d", &num); head = Insert_first(num, head);    break;
        case '2': printf("Was delete %d elemens", Delete_copy(0, head)); break;
        case '3': return;
        }
    }
}

有必要按采集月份从小到大对所有记录进行分组。如果您决定不使用动态内存分配，那么它会按应有的方式从小到大排序，但是如果您更改代码，那么排序就不会那样工作。下面是按错误顺序排序的代码。

#include <stdio.h>
#include <stdlib.h>
#define COUNT_ITEMS 4

typedef struct Product {
    char name[256];
    int day;
    int month;
    int year;
    int cost;
    int count;
} Product;
void printinfo(const Product *prod)
{
    printf("Product name: %s\n", prod->name);
    printf("Date of purchase : %d.%d.%d\n", prod->day, prod->month, prod->year);
    printf("Product price: %d\n", prod->cost);
    printf("Number of products: %d\n", prod->count);
}

Product *prodRead() {
    Product *prod;
    prod = malloc(sizeof(Product));
    printf("Enter name of a Product:\n");
    scanf("%s", &prod->name);
    printf("Enter day, month(number), year of purchase through a space:\n");
    scanf("%d%d%d", &prod->day, &prod->month, &prod->year);
    printf("Enter cost of product:\n");
    scanf("%d", &prod->cost);
    printf("Enter number of product:\n");
    scanf("%d", &prod->count);
return prod;
}
int compMon(const void *a, const void *b) {
    const Product *partOne = (Product *)a;
    const Product *partTwo = (Product *)b;
    return ((*partOne).month > (*partTwo).month) - ((*partOne).month < (*partTwo).month);
}
int main() {
    Product *prod[COUNT_ITEMS];
    for (int i = 0; i < COUNT_ITEMS; i++) {
        prod[i]=prodRead();
        printf("\n");
    }
    qsort(prod, COUNT_ITEMS, sizeof(Product*), compMon);
    printf("Structura POSLE sortirovki \n");
    for (int i = 0; i < COUNT_ITEMS; i++) {
        printinfo(prod[i]);
        printf("\n");
    }
return 0;
}

输入数据（左）和输出数据（右）：

A                                    C   
10 11 2020                           6 6 2020
1000                                 600
2                                    1
B                                    A
5 5 2019                             10 11 2020
500                                  1000
3                                    2
C                                    D 
6 6 2020                             3 3 2018
600                                  200
1                                    2
D                                    B
3 3 2018                             5 5 2019
200                                  500
2                                    3

有一项任务是将 R 语言添加到 php。我想比较一下纯php和R语言的脚本执行速度，这个怎么查，用什么资源？

有几种表格可以用 Approved/Rejected 来回答。单击 Approved/Rejected 后，将调用 AJAX。我想在成功的 AJAX 调用后将 +1、+2 等添加到跨度。怎么做才更正确？

js：

$( document ).ready(function() {
  var formaElement = $(".container");
  var counter = 0;
  formaElement.find("form[id*='zaya']").each(function() {
    var stringsp = 'zaya';
    var element = document.querySelectorAll("form[id*='zaya']")[counter];
    var idElement = element.id;
    var need = idElement.split(stringsp);
    var need = need[1];
    $("#odoZaSe"+need).click(function(ev){
      ev.preventDefault();
      var newDivOtk = document.getElementById("creaDivOtk"+need);
      newDivOtk.remove();
      var odob = "True";
      sendAjaxForm('result_form', 'zaya'+need, 'zayavki.php', odob);
      var forRemo = "zaya"+need";
      removeForm(forRemo);//Удаляем отправленную форму
        return false;
    });
    counter++;
  });
});
function otkZa(idza, coun){
  var desc = document.createElement("div");
  desc.className = "form-group";
  desc.id = "creaDivOtk"+coun;
  desc.innerHTML = "<label>Причина отказа:</label>"+
  "<input name=\"desc\" type=\"text\" class=\"form-control\" placeholder=\"Причина\">"+
  "<input class=\"btn btn-primary\" type=\"text\" name = \"otkZaSe"+idza+"\" id=\"otkZaSe"+coun+"\" readonly value=\"Отклонить\">";
  var placeDiv = document.getElementById("otkZa"+coun);
  var parent = placeDiv.parentNode;
  parent.insertBefore(desc, placeDiv);
  placeDiv.remove();
  var rem = document.getElementById("odoZaSe"+coun);
  rem.remove();
  var forRemo = document.getElementById("id ='zaya"+coun+"']");
  $("#otkZaSe"+coun).click(function(ev){
      ev.preventDefault();
      var odob = "False";
      sendAjaxForm('result_form', 'zaya'+coun, 'zayavki.php', odob);
      removeForm(forRemo);//Удаляем отправленную форму
        return false;
    });
}
function sendAjaxForm(result_form, reg_form, url, odob) {
    $.ajax({
        url:     url,
        type:     "POST",
        dataType: "html", //формат данных
        data: $("#"+reg_form).serialize(),
        success: function(response) {
          result = $.parseJSON(response);
          if(result.good == "True"){
            var message = document.getElementById('result_form');
            message.innerHTML += "<p style='color: red;'>Операция произведена</p>";
            message.scrollIntoView();
            if(odob == "True"){
              var span = document.getElementById('prinato');
              var text = document.getElementById('prinato').textContent;
              span.innerHTML = text+"<p style='color: red;'>+ "+number+"</p>";
              //Вот здесь должно добавляться +1, +2 и тд.
            }else if (odob == "False") {
              var span = document.getElementById('nePrinato');
              var text = document.getElementById('nePrinato').textContent;
              span.innerHTML = text+"<p style='color: red;'>+ "+number+"</p>";
              //Вот здесь должно добавляться +1, +2 и тд.
            }
          }
        },
        error: function(response) { 
            $('#result_form').html('Ошибка. Данные не отправлены.');
        }
    });
}

html $counterZaya - 只是一个柜台，$idZaya - 票证 ID：

<p>
<!--Тут из БД берётся кол-во заявок до запросов-->
Принятые заявки: <span id = 'prinato' class = ''>$countPrin</span>
Не принятые заявки: <span id = 'nePrinato' class = ''>$countNePrin</span>
</p>
<div id="result_form"></div>
<div class="container">
  <!--Тут в цикле выводятся формы-->
  <form id=\"zaya$counterZaya\" class=\"buttons\">
    <input name="odoZaSe$idZaya" id = "odoZaSe$counterZaya" type="text" class="btn btn-primary" value="Одобрить" readonly>
    <button onclick="otkZa($idZaya, $counterZaya);" id="otkZa$counterZaya">Отклонить</button>
  </form>
</div>

实际上有4个变量。哪个底部给出是未知的。每个变量的操作都是相同的。如何在不单独检查每个变量的情况下获得给定变量？

if(empty($first) and empty($second) and empty($third) and empty($fourth)){
  echo "Все пусты";
}else{
  //$desvar = ?;
  $que = "SELECT id FROM table WHERE id = ?";
  $prepque = $db->prepare($que);
  $prepque->bind_param("i", $desvar);
  $prepque->execute();
}

情况是这样的：有2个材料：regis和profil，有一个连接到regis的ajax脚本，有一个通过ajax发送到saveUser.php的表单处理程序。如果您使用以下代码，那么一切都会正常运行（所有检查都有效，一切都已保存，它会从 regis 切换到 profil）。

注册：

<div id="result_form"> </div>
<form id="reg_form" class="form" action="" method="POST">
<div class="form-group"><label>Ваш логин для входа на сайт:</label><br /> <input class="form-control" maxlength="50" name="login" type="text" placeholder="Your login..." data-validate="" /><span class="hint">Обязательно для заполнения</span></div>
<div class="form-group"><label>Ваш пароль:</label><br /> <input class="form-control" maxlength="50" name="password" type="password" placeholder="Your pASS..." data-validate="" /><span class="hint">Обязательно для заполнения</span></div>
<div class="form-group"><label>Ваша должность:</label><br /> <input class="form-control" maxlength="50" name="position" type="text" placeholder="Your position..." data-validate="" /><span class="hint">Обязательно для заполнения</span></div>
<div class="form-group"><label>Ваше место работы:</label><br /> <input class="form-control" maxlength="50" name="placeJob" type="text" placeholder="Your place job..." data-validate="" /><span class="hint">Обязательно для заполнения</span></div>

<div class="form-group"><input id="reg_btn" class="btn btn-primary" name="submit" type="submit" value="Зарегистрироваться" /></div></form>

profile - 这里应该通过 sourcerer 插件从会话中输出一个值

{source} <?php
echo("Hello");
?> {/source}

阿贾克斯：

$( document ).ready(function() {
    $("#reg_btn").click(
        function(ev){
          ev.preventDefault();
          var forma = $("#reg_form");
          var field = [];
          var leng = 0;
          forma.find('input[data-validate]').each(function() {
            field.push('input[data-validate]');
            var value = $(this).val();
            var line = $(this).closest('.form-group');
              if(!value){
                line.addClass('emptyField');
                setTimeout(function() {
                  line.removeClass('emptyField')
                }.bind(this),3000);
              }else{leng++;}            
          });
          if(leng == field.length){
            sendAjaxForm('result_form', 'reg_form', 'http://ip/nameSite/templates/bootstrap4/dopScripts/saveUser.php');
            return false;            
          }
        }
    );
});

function sendAjaxForm(result_form, reg_form, url) {
    $.ajax({
        url:     url, 
        type:     "POST", 
        dataType: "html", //формат данных
        data: $("#"+reg_form).serialize(),  
        success: function(response) { 
          result = $.parseJSON(response);
          if(result.already == "True"){
            var message = document.getElementById('result_form');
            message.innerHTML = "<p style='color: red;'>Такой логин уже существует</p>";            
            message.scrollIntoView();
          }else{
            window.location.href = 'moj-profil';            
          }
        },
        error: function(response) {
            $('#result_form').html('Ошибка. Данные не отправлены.');
        }
    });
}

保存用户.php：

<?php
  if (isset($_POST['login'])) { $login = $_POST['login']; if ($login == '') { unset($login);} }
  if (isset($_POST['password'])) { $password = $_POST['password']; if ($password =='') { unset($password);} }
  if (isset($_POST['position'])) { $position = $_POST['position']; if ($position =='') { unset($position);}}
  if (isset($_POST['placeJob'])) { $placejob = $_POST['placeJob']; if ($placejob =='') { unset($placejob);}}  
  include('bd.php');
  $checkUser="SELECT nick FROM registration WHERE nick = ?";
  $query = $db->prepare($checkUser);
  $query->bind_param("s", $login);
  $query->execute();
  $query->store_result();
  $query->bind_result($check_email);
  $query->fetch();
  $empty = $query->num_rows();
  if($empty != 0){
    $already="True";
    $result = array('already'=>$already);
  }else{
    $insert = "INSERT INTO registration (nick, pass, position, placejob)VALUES (?, ?, ?, ?)";
    $qinsert = $db->prepare($insert);
    $qinsert->bind_param("ssss", $login, $password, $position, $placejob);
    $qinsert->execute();
    $already="False";
    //THIS PLACE 
    $result = array(
        'already' => $already,
        'login' => $login
    );
  }
  echo json_encode($result);
?>

现在的问题。很多资料表明，session_start(); $_SESSION['']jooml 中的常规构造会话不起作用，应使用以下构造：

报名参加会议

define( '_JEXEC', 1 );
define('JPATH_BASE', $_SERVER['DOCUMENT_ROOT']);
define( 'DS', DIRECTORY_SEPARATOR );
require_once (JPATH_BASE . DS . 'includes' . DS . 'defines.php');
require_once (JPATH_BASE . DS . 'includes' . DS . 'framework.php');
$mainframe = JFactory::getApplication('site');
$mainframe->initialise();
$mainframe = JFactory::getApplication('site');
$session = JFactory::getSession();
$session->set('myVar', array('login'=>$login, 'first'=>1));

要获得会话：

{source} <?php
define( '_JEXEC', 1 );
define('JPATH_BASE', $_SERVER['DOCUMENT_ROOT']);
define( 'DS', DIRECTORY_SEPARATOR );
require_once (JPATH_BASE . DS . 'includes' . DS . 'defines.php');
require_once (JPATH_BASE . DS . 'includes' . DS . 'framework.php');
$mainframe = JFactory::getApplication('site');
$mainframe->initialise();
$session = JFactory::getSession();
$mySess = $session->get('myVar', array());
echo("Hello $mySess");//Результат Hello Array
foreach($mySess as $one){
echo("Hello".$one['login']." ".$one['first']);//Результат пуст
}
?> {/source}

但它不起作用，因为如果会话入口代码插入//THIS PLACE到 saveUser.php 文件或任何其他地方，那么所有内容都将写入数据库，但 ajax 不会重定向到新页面并会说Uncaught SyntaxError: Unexpected end in JSON，如果使用defined('_JEXEC') or die;或Uncaught SyntaxError: Unexpected token < in JSON，如果使用define('_JEXEC', 1);。 我是joomle的新手，不太了解。您能告诉我如何修复此错误，以便会话正常连接、保存和工作吗？

有一个简单的查询可以工作，但是如果你输入'，那么它就不会工作，因此prepare查询不会尝试这样做，但它会返回 0 作为结果，虽然不是这种情况并且包含在健康）状况。如何解决？我尝试了 throughfetchColumn()和 through $empty = $query->rowCount() === 0; var_dump($empty); if ($empty)，但它们都没有工作。

工作请求（真的有这样的用户，如果不进入）

$checkPoluch = mysqli_query($db, "SELECT * FROM users WHERE login = '$namePol'");
      $empty = mysqli_num_rows($checkPoluch);
      if ($empty == 0) {        
        echo "Ошибка!";
        exit("");
      }

通过prepare（在if进入，即使有这样的登录）

$checkPoluch = "SELECT * FROM users WHERE login = ?";
  $query = $db->prepare($checkPoluch);
  $query->bind_param("s", $namePol);
  $query->execute();
  $empty = $query->num_rows;
  if ($empty == 0) {
    echo "Ошибка!";
    exit("");
  }

有一种形式是通过 POST 请求传递 selects 的值，但是需要给它们添加一个数组，这个数组是在这些 selects 的创建过程中形成的。怎么做？是不是可以不把这个写入测试输入的值，然后再发送呢？:)

第一个.php：

<form class="forma" action="second.php" method="post">
  <div class="form-group">
    <select class="form-control" name="NamesUsers">
<?php
      $name = $_SESSION['login'];      
      $availableNames = array();
      if ($_SESSION['RolOfUser'] == 'admin'){
        $sql = mysqli_query($db, "SELECT login FROM users WHERE login != '$name'");
        while ($row = $sql->fetch_assoc())
        {
          echo "<option value=\"".$row['login']."\">" . $row['login'] . "</option>";
          array_push($availableNames, $row['login']);
        }
      }else {
        $sqlModer = mysqli_query($db,
        "SELECT login FROM users INNER JOIN roli ON users.id=roli.UserId where users.login !='$name' and roli.RolOfUser !='admin'");
        while ($rrow = $sqlModer->fetch_assoc()) {
          echo "<option value=\"".$rrow['login']."\">" . $rrow['login'] . "</option>";
          array_push($availableNames, $row['login']);
        }
      }
?>

    </select>
  </div>
    <div class="form-group">
      <select class="form-control" name = "SetRol">
        <option value = "admin">Сделать администратором</option>
        <option value = "moderator">Сделать модератором</option>
        <option value = "user">Понизить до ЮЗВЕРЯ</option>
      </select>
    </div>  
  <input class="btn btn-primary" type="submit" value="Изменить роль">
</form>

第二个.php：

  $NameUser = $_POST['NamesUsers'];
  $NameRol = $_POST['SetRol'];
  $allowed = array("admin", "moderator", "user");
  //$availableNames = $_POST['$availableNames']; ???
  if(in_array($NameRol, $allowed) and in_array($NameUser, $availableNames)){
    $sql = "UPDATE roli SET RolOfUser = ? WHERE UserId = (SELECT id FROM users WHERE login = ?)";
    $statement = $db->prepare($sql);
    $statement->bind_param("ss", $NameRol, $NameUser);
    $statement->execute();
  }else{
    echo "<div class=\"message center\"><p>Невозможный пользователь или роль</p></div>";
  }

如果使用这段代码，那么计算机上的所有进程都会显示出来，但我不需要知道这些进程的所有信息，只需要知道它们的 id 和它们占用多少内存即可。如果不使用 psutil 库，我找不到如何做到这一点。

    import os
    from subprocess import Popen, PIPE, check_output
    print(*[line.decode('cp866', 'ignore') 
    for line in Popen('tasklist', stdout=PIPE).stdout().readlines()])

我有一个能够选择它的原始图像（使用imgAreaSelect）。然后我通过坐标 x1= 130, y1 = 70, x2 = 280, y2 = 220 选择它并创建它们的缩小副本，但它不是由所选坐标创建的，不清楚如何创建。即使您手动输入坐标。

第一个.php：

<img src="avatars/default.jpg" id="photo" alt="">
    <form action = "second.php" method = "post" >
      <input type = "text" name = "x1" value = "" />
      <input type = "text" name = "y1" value = "" / >
      <input type = "text" name = "x2" value = "" />
      <input type = "text" name = "y2" value = "" />
      <input type = "text" name = "w" value = "" />
      <input type = "text" name = "h" value = "" />
      <input type = "submit" name = "submit" value = "Submit" />
    </ form>

第二个.php：

<?php
$x1 = $_POST['x1'];
$y1 = $_POST['y1'];
$x2 = $_POST['x2'];
$y2 = $_POST['y2'];
$w = $_POST['w'];
$h = $_POST['h'];
echo "x1 = $x1, y1 = $y1, x2 = $x2, y2 = $y2, w = $w, h = $h";

function resizeimg($filename, $smallimage, $xx, $yy, $w, $h)
  {
    $ratio = $w/$h;
    // получим размеры исходного изображения
    $size_img = getimagesize($filename);
    // получим коэффициент сжатия исходного изображения
    $src_ratio=$size_img[0]/$size_img[1];

    $dest_img = imagecreatetruecolor($w, $h);
    $src_img = imagecreatefromjpeg($filename);
         imagecopyresampled($dest_img, $src_img, 130, 70, 280, 220, $w, $h, $w, $h);

    imagejpeg($dest_img, $smallimage);
    imagedestroy($dest_img);
    imagedestroy($src_img);
    return true;
  }
      $image = "avatars/default.jpg"; //большое фото
      $smallimage = "avatars/default_s.jpg";  // малое фото
      if  (!resizeimg($image, $smallimage, $x1, $y1, 150, 150))
         { echo  "Ошибка при создании уменьшенной копии изображения"; }else {
           echo "normasno";
         }
?>

应该出现在右边的照片：

发生的事情的照片：

情况看起来很简单，但我终于搞糊涂了。底线是您需要为每个元素添加一个 id，其值是 = 到 value 属性。但最终 valuev 数组充满了值，但是当我尝试添加它们时，它返回 [object Object]。JQ:

var valuev = [];
        $("input[type=checkbox]:not(:first)").each( function( index) { valuev[index] = $(this).attr("value"); });
        $("input[type=checkbox]:not(:first)").attr({
          name: "checkMess[]",
          id: ""+($("input[type='checkbox']:not(:first)").each( function( index, element) {
            var i = index;
            $( element).attr({
              value: ""+valuev[index]// Тут [object Object]
            });
            alert(valuev[i]);//Тут нормальные значения
            }
          ))
        });

HTML：

<input type="checkbox" value="first">
<input type="checkbox" value="second">
<input type="checkbox" value="third">
<input type="checkbox" value="fourth">

因此：

<input type="checkbox" value="first">
<input type="checkbox" value="second" name="checkMess[]" id="[object Object]">
<input type="checkbox" value="third" name="checkMess[]" id="[object Object]">
<input type="checkbox" value="fourth" name="checkMess[]" id="[object Object]">

这个问题可能太笼统或离题，但我很好奇。我见过有人用querySelectorid 而不是类名来查找元素。为什么不使用该方法getElementById，因为它是专门为此设计的？querySelector执行得更快或更正确？