Five ways to get file name suffix in php

This article mainly introduces the common methods of obtaining file name suffix in PHP. It analyzes five common techniques of obtaining file name suffix in PHP. It has certain reference value. Friends in need can refer to it

The examples in this article summarize common methods for obtaining file name suffixes in PHP.

The specific implementation method is as follows:

<?php
header("Content-type:text/html;charset=utf-8");
$pic = "abc.jpg";
//第一种方法
$pics = explode(&#39;.&#39;,$pic);
$num = count($pics);
echo $pics[$num-1]."<br />";
//第二种方法
echo end($pics)."<br />";
//end()方法，获取数组最后一个单元值
//第三种方法
$info = pathinfo($pic);
echo $info[&#39;extension&#39;]."<br />";
//第四种方法
echo pathinfo($pic,PATHINFO_EXTENSION)."<br />";
//第五种方法
$offset = strrpos($pic,&#39;.&#39;);
//计算指定字符串在目标字符串中最后一次出现的位置
echo substr($pic,$offset+1);
?>

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