Code examples of several ways to obtain file name suffix in PHP

高洛峰
Release: 2016-10-20 14:16:40
Original
1144 people have browsed it

Record several methods of obtaining file name suffix that are often used in php

<?php
header("Content-type:text/html;charset=utf-8");
$pic= "abc.jpg"; // 图片名称

//第一种方法
$pics = explode(&#39;.&#39;,$pic);
$num  = count($pics);
echo $pics[$num-1]."<br />";

//第二种方法
$pics = explode(&#39;.&#39;,$pic);
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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