当使用echo $variablename时，表单变量无法打印 - Form variables failing to print when using echo $variablename

Form variables failing to print when using echo $variablename

我正在创建一个表单，读取用户名和电子邮件，然后通过PHP文件向他们发送代金券，该文件如下所示:

<?php
  $deal = "offer or discount details";
  $to = "$email";
  $subject = "Tonights wheree voucher - $deal";
  $message = '
  <html>
    <body>
        Test email sent to <?php echo $email; ?>.
    </body>
  </html>
  ';
  $headers = "From: wheree <no-reply@wheree.co.uk>" . "'r'n" .
             "Content-type: text/html" . "'r'n";
  mail($to, $subject, $message, $headers);
?>

的形式:

<form class="cmxform" id="details-form" method="get" action="test.php">
                 <fieldset>
                       <p>
                         <input id="name" name="name" title="Please enter your full name. " size="18" class="tagcheck" minlength="5" maxlength="60" value="Name" onfocus="if(this.value==this.defaultValue){this.value=''};" onblur="if(this.value==''){this.value=this.defaultValue};" />
                       </p>
                       <p>
                         <input id="email" name="email" size="18" title="Please enter a valid email address. " class="required email" value="Email" onfocus="if(this.value==this.defaultValue){this.value=''};" onblur="if(this.value==''){this.value=this.defaultValue};" />
                       </p>
                       <p class="tickbox-wrapper">
                       <input id="accept-tick" type="checkbox" name="vehicle" class="required" title="You must accept our Terms & Conditions. " /> I accept the voucher usage <a href="/voucher-terms-and-conditions" alt="terms" class="terms-link">Terms & Conditions</a>.
                       </p>
                       <div id="RegisterErrors" style="display:none"></div>
                       <p>
                         <input class="submit" type="submit" value="Continue"/>
                       </p>
                 </fieldset>
</form>

这工作得很好，但不回变量$email在收到的电子邮件?我也试过使用$_GET["email"]，但再次没有成功。

提前感谢您的帮助。

您正在尝试将echo语句放在单个引号字符串中。将其连接在:

中

  $message = '
  <html>
    <body>
        Test email sent to ' . $email . '.
    </body>
  </html>
  ';

或者更好的是，为$message切换为双引号字符串，其中可以插入$email。

  $message = "
  <html>
    <body>
        Test email sent to $email.
    </body>
  </html>
  ";

关于变量插值和单引号与双引号的区别的更多信息，请参阅PHP字符串手册。

如果你有很多变量和多行，第三个选择是HEREDOC语法，它可以避免完全引用。

  $message =<<<MESSAGE
  <html>
    <body>
        Test email sent to $email.
    </body>
  </html>
MESSAGE;
// Note that the MESSAGE; above MUST be at the start of its own line, with no indentation

您有$echo在单引号内。在PHP中，变量不在单引号中展开。试着把它放在双引号里。或者，如建议的那样，如果想使用单引号，请将其连接在。

中。

$foo = "HELLO";
echo 'Foo: $foo';       // Prints 'Foo: $foo'
echo 'Foo: ' . $foo;    // Prints 'Foo: HELLO'
echo "Foo: $foo";       // Prints 'Foo: HELLO'

试试这个:

<?php
  $deal = "offer or discount details";
  $to = $_GET['email'];
  $subject = "Tonights wheree voucher - $deal";
  $message = '
  <html>
    <body>
        Test email sent to '.$to.'.
    </body>
  </html>
  ';
  $headers = "From: wheree <no-reply@wheree.co.uk>" . "'r'n" .
             "Content-type: text/html" . "'r'n";
  mail($to, $subject, $message, $headers);
?>