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3 Darin's questions

Martin Hope
3 Darin
Asked: 2021-01-01 00:11:08 +0000 UTC
  • 0
    <?
echo filesize($_POST['image_load']);
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>TEST</title>
<link href="style.css" rel="stylesheet" type="text/css">
<script type="text/javascript" src="jquery-3.2.1.min.js"></script>
</head>

<body>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" id="buy_pixels">
<input type="file" name="image_load" id="image_load" value="" accept="image/*" required>
<input class="buy_button" type="submit" value="Buy" name="submit">
</form>
</body>
</html>

错误的原因是什么？

php
Martin Hope
3 Darin
Asked: 2020-11-12 19:32:41 +0000 UTC
  • -9

如何将在 jquery 或 js 输入中输入的两个数字相乘并将结果放入 div 中？

<input type="number" name="num1" id="num1" value="" min="10" max="1000" step="10" required>
<input type="number" name="num2" id="num2" value="" min="10" max="1000" step="10" required>
<div id="res"></div>
javascript
Martin Hope
3 Darin
Asked: 2020-10-08 17:42:32 +0000 UTC
  • 2

有表单验证码

<?
//Если форма отправлена
if (isset($_POST['submit'])) {
    if (md5($_POST['norobot']) <> $_SESSION['randomnr2']) {
        $hasError = true;
    }
    //Проверка Поля ИМЯ
    if (trim($_POST['contactname']) == '') {
        $hasError = true;
    } else {
        $name = trim($_POST['contactname']);
    }
    //Проверка правильности ввода EMAIL
    if (trim($_POST['email']) == '') {
        $hasError = true;
    } else
    if (!eregi("^[A-Z0-9._%-]+@[A-Z0-9._%-]+\.[A-Z]{2,4}$", trim($_POST['email']))) {
        $hasError = true;
    } else {
        $email = trim($_POST['email']);
    }
    //Проверка наличия ТЕКСТА сообщения
    if (trim($_POST['message']) == '') {
        $hasError = true;
    } else {
        if (function_exists('stripslashes')) {
            $comments = stripslashes(trim($_POST['message']));
        } else {
            $comments = trim($_POST['message']);
        }
    }
    //Если ошибок нет, отправить email
    if (!isset($hasError)) {
        $emailTo = 'darlex.box@hotmail.com'; //Сюда введите Ваш email
        $body = "Name: $name \n\nEmail: $email \n\nComments:\n $comments";
        $headers = 'From: My Site <'.$emailTo.'>' . "\r\n" . 'Reply-To: ' . $email;
        mail($emailTo, $subject, $body, $headers);
        $emailSent = true;
    }
}
?>

您需要取消重新提交表格。我听说过header('Location:'.$_SERVER['PHP_SELF']);，但是在哪里插入它以及如何正确排列它？

php