POST请求空白，为什么？

Question

我将以下代码另存为send.php：

<?php

$to_email = "[e-mail]";

$subject = $_POST['subject'];

$body = "Hi, This is test email send by PHP Script";

$headers = "From: [e-mail]";

if ( mail($to_email, $subject, $body, $headers)) {

    echo("Email successfully sent to $to_email...");

} else {

    echo("Email sending failed...");

}

?>

如果我导航到https://myWebsite.com/Stuff/send.php 并发送电子邮件，该电子邮件将发送$subject = "something"

但是如果我设置$subject为POST变量。当我在浏览器中写入此URL时，它不会发送主题（例如，电子邮件仍然发送，但主题现在为空）：

 https://myWebsite.com/Stuff/send.php?subject=notworking

Answer 1

要获得两者$_POST ，$_GET您可以使用$_REQUEST适用于两者的东西。在您的代码中替换$subject = $_GET['subject'];和$subject = $_REQUEST['subject'];如果有人直接在浏览器中直接点击了网址，但没有设置主题，则可以阻止他们使用if(!empty($_REQUEST['subject'])){&nbsp; $to_email = "[e-mail]";&nbsp; $subject = $_REQUEST['subject'];&nbsp; $body = "Hi, This is test email send by PHP Script";&nbsp; $headers = "From: [e-mail]";&nbsp; if ( mail($to_email, $subject, $body, $headers))&nbsp; &nbsp; echo("Email successfully sent to $to_email...");&nbsp; else&nbsp; &nbsp; echo("Email sending failed...");}

Answer 2

尝试一下。&nbsp;<?php&nbsp; &nbsp; $to_email = "[e-mail]";&nbsp; &nbsp; $subject = (isset($_GET['subject']) && (!empty($_GET['subject']))?$_GET['subject']:"No Subject";&nbsp; &nbsp; $body = "Hi, This is test email send by PHP Script";&nbsp; &nbsp; $headers = "From: [e-mail]";&nbsp; &nbsp; if ( mail($to_email, $subject, $body, $headers))&nbsp; &nbsp; &nbsp; &nbsp; echo("Email successfully sent to $to_email...");&nbsp; &nbsp; else&nbsp; &nbsp; &nbsp; &nbsp; echo("Email sending failed...");?>

Answer 3

如果您要从网址参数中提取值，则需要使用$_GET 全局变量来获取这样的数据，<?php$to_email = "[e-mail]";$subject = $_GET['subject'];$body = "Hi, This is test email send by PHP Script";$headers = "From: [e-mail]";if ( mail($to_email, $subject, $body, $headers)) {&nbsp; &nbsp; echo("Email successfully sent to $to_email...");} else {&nbsp; &nbsp; echo("Email sending failed...");}?>