php - 将日期+时间插入电子邮件主题

Question

如何在主题的开头插入日期和时间，例如

代码中的 date('dmY h:m:s') 不起作用并返回此错误：解析错误：语法错误，意外的 T_STRING

<?php
    mail('joe@example.com', '"date('d-m-Y h:m:s')" Daily Backup: example.com', 'Download your daily backup from this link: http://example.com/backups/backup.zip');
?>

此代码有效：（没有日期和时间）

<?php
    mail('joe@example.com', 'Daily Backup: example.com', 'Download your daily backup from this link: http://example.com/backups/backup.zip');
?>

谢谢您的帮助！

Answer 1

您错过了将 php 代码封装在字符串中：

mail('joe@example.com', '"'.date('d-m-Y h:m:s').'" Daily Backup: example.com', 'Download your daily backup from this link: http://example.com/backups/backup.zip');

Answer 2

它看起来像一个语法错误。尝试在开始字符串之前放置日期函数，使其变为

<?php
    mail('joe@example.com', date('d-m-Y h:m:s').' Daily Backup: example.com', 'Download your daily backup from this link: http://example.com/backups/backup.zip');
?>