Home >Backend Development >PHP Tutorial >7 ways to get the suffix name of PHP files
The content of this article is to share with you 7 ways to obtain the suffix name of PHP files. It has certain reference value. Friends in need can refer to it
Recommended manual:php complete self-study manual
First type:
$file = 'x.y.z.png'; echo substr(strrchr($file, '.'), 1);
Analysis: strrchr($file, '.')
strrchr() function finds the last occurrence of a string in another string and returns the position from that string All characters from position to the end of the string
Second type:
$file = 'x.y.z.png'; echo substr($file, strrpos($file, '.')+1);
Analysis: strrpos($file, '.')
Find the position where "." last appeared in the string and return the position substr() intercepts from this position
The third type:
$file = 'x.y.z.png'; $arr=explode('.', $file); echo $arr[count($arr)-1];
The fourth type:
$file = 'x.y.z.png'; $arr=explode('.', $file); echo end($arr); //end()返回数组的最后一个元素
The fifth type:
$file = 'x.y.z.png'; echo strrev(explode('.', strrev($file))[0]);
The sixth type:
.$file = 'x.y.z.png'; echo pathinfo($file)['extension'];
Analysis: pathinfo()
The function returns the file path information in the form of an array.
Includes the following array elements:
##
[dirname] [basename] [extension]
th Seven types:
.$file = 'x.y.z.png'; echo pathinfo($file, PATHINFO_EXTENSION);
Summary: 2 types of string interception, 3 types of array splitting, 2 types of path functions
Related article recommendations: 1.
Several methods for PHP to determine and obtain file extensions 2.
Various methods for PHP to obtain file extensions
Related video recommendations:
1. Dugu Jiujian (4)_PHP video tutorial
The above is the detailed content of 7 ways to get the suffix name of PHP files. For more information, please follow other related articles on the PHP Chinese website!