douyong1886 2017-04-11 00:49
浏览 341
已采纳

php中的if(false)是什么意思?

Today, I decided to download wordpress and the first file that I have come across is wp-admin/install.php. the first thing in the file is this:

// Sanity check.
if ( false ) {
?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Error: PHP is not running</title>
</head>
<body class="wp-core-ui">
    <p id="logo"><a href="https://wordpress.org/">WordPress</a></p>
    <h1>Error: PHP is not running</h1>
    <p>WordPress requires that your web server is running PHP. Your server does not have PHP installed, or PHP is turned off.</p>
</body>
</html>
<?php
}

Now I am kind of wondering, What is if( false ) ? and how does it mean that the user is not running php on their server?

  • 写回答

2条回答 默认 最新

  • dongzhenbi8919 2017-04-11 01:53
    关注

    If the PHP is running on the server, the statement inside if ( false ) will be skipped, because this equates to FALSE or its like if(0) .

    But in such cases that PHP compiler does not exist, the server will parse all html codes inside that statement ,(saying PHP is not running).

    It's a sanity check.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(1条)

报告相同问题?

悬赏问题

  • ¥15 关于#matlab#的问题:在模糊控制器中选出线路信息,在simulink中根据线路信息生成速度时间目标曲线(初速度为20m/s,15秒后减为0的速度时间图像)我想问线路信息是什么
  • ¥15 banner广告展示设置多少时间不怎么会消耗用户价值
  • ¥16 mybatis的代理对象无法通过@Autowired装填
  • ¥15 可见光定位matlab仿真
  • ¥15 arduino 四自由度机械臂
  • ¥15 wordpress 产品图片 GIF 没法显示
  • ¥15 求三国群英传pl国战时间的修改方法
  • ¥15 matlab代码代写,需写出详细代码,代价私
  • ¥15 ROS系统搭建请教(跨境电商用途)
  • ¥15 AIC3204的示例代码有吗,想用AIC3204测量血氧,找不到相关的代码。