php gets the file name of the currently executed php file

First of all, we must get the current page URL. Here we use php's $_SERVER['PHP_SELF'] to get the web page address.

Assume that the web page address is: www.php.cn/course.html

Example:

$php_Self= $_SERVER['PHP_SELF']; //获取网页地址
//输出结果：//www.php.cn/course.html

After output, we only find that Requires course.html, the previous list of things are useless. How to do it?

Here we use the substr() function.

Online learning video tutorial: php video tutorial

Function introduction:

substr() is used to return a string a part of.

Syntax:

substr(string,start,length)

See the second parameter of this function, which specifies where to start in the string. Obviously the last /beginning in the url is what we need. So we need to use the strrpos() function to get the position of the last occurrence.

Grammar:

strrpos(string,find,start)

The total code is as follows:

$php_Self = substr($_SERVER['PHP_SELF'],strripos($_SERVER['PHP_SELF'],"/")+1);
//为啥要加1呢？因为要排除前面的那个 /

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