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Владлен Вожжаев
Asked:2020-01-31 23:43:25 +0000 UTC2020-01-31 23:43:25 +0000 UTC

告诉我错在哪里？

  • 772

我不明白，我想在提交表单后查看变量的值。相同的页面处理程序

echo  $description, $class, $audio,  $answer, $tonality ;

但都无济于事，到头来完全糊涂了。帮助。

<form action="add_material.php" method="post" enctype="multipart/form-data" id="myform"></form>
<!-- кусок таблицы -->
<tr>
              <td><input type="textarea" name="description" form="myform"></td>
              <td><input type="text" name="class" form="myform"></td>
              <td>
                  Аудио (строго mp3)<br>  
              <input name="userfile[]" type="file" form="myform"><br><br>
                  Ответ (строго png)<br>
              <input name="userfile[]" type="file" form="myform"><br>
              </td>
              <td><select required size = "1" name = "tonality" form="myform">
                    <option disabled>Тональность</option>
                    <option value = "C-dur_nastroi.mp3">C-Dur</option>
                    <option value = "d-moll_nastroi.mp3">d-moll</option>
                  </select></td>
              <td><input type="submit" name="add"  form="myform"/> </td>
            </tr>
             <?php  

                if ( isset( $_POST['description'] ) and isset( $_POST['class'] ) and isset( $_POST['userfile[0]'] ) and isset( $_POST['userfile[1]'] ) and isset( $_POST['tonality'] )) {
                $description = $_POST['description'];  
                $class = $_POST['class'];
                $audio = $_POST['userfile[0]'];
                $answer = $_POST['userfile[1]'];
                $tonality = $_POST['tonality'];
                echo  $description, $class, $audio,  $answer, $tonality ;    
                }
?>
php

2 个回答

  1. Best Answer

    因为文件到达全局数组$_FILES，而不是$_POST

    同时，它甚至不会

    $_FILES['userfile[0]']

    但像这样

    $_FILES['userfile']

    具体来说，数组打印输出$_FILES['userfile']将如下所示：

    Array
(
    [userfile] => Array
        (
            [name] => Array
                (
                    [0] => musicName1.mp3
                    [1] => musicName2.mp3
                )

            [type] => Array
                (
                    [0] => audio/mp3
                    [1] => audio/mp3
                )

            [tmp_name] => Array
                (
                    [0] => W:\userdata\temp\phpC521.tmp
                    [1] => W:\userdata\temp\phpC63B.tmp
                )

            [error] => Array
                (
                    [0] => 0
                    [1] => 0
                )

            [size] => Array
                (
                    [0] => 14539039
                    [1] => 10321791
                )    
        )    
)

    从这里开始，您的条件未满足，因此它不会打印任何内容。

    对于未来：学习基础知识并学习一些不错的函数，例如var_dump和print_r以了解发生了什么

    • 3

  2. 至少应在所有输入结束后关闭表单标签 =)

    • 0

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