<?php /** * Created by PhpStorm. * User: liuft * Date: 2016/3/7 * Time: 15:46 */ //第一种 // function get_extension($file) // { // $file = explode('.', $file); // return end($file); // } //第二种 // function get_extension($file) // { // return substr(strrchr($file, '.'), 1); // } //第三种 // function get_extension($file){ // return pathinfo($file)['extension']; // } // //第四种 //function get_extension($file) //{ // return substr($file, strrpos($file, '.') + 1); //} //第五种 //function get_extension($file) //{ // $file = preg_split('/\./', $file); // return end($file); //} //第六种 // function get_extension($file){ // $file = strrev($file); // return strrev(substr($file,0,strpos($file,'.'))); // } // //第七种 // function get_extension($file) // { // return pathinfo($file, PATHINFO_EXTENSION); // } // //第八种 // function get_extension($file) // { // preg_match_all('/\.[a-zA-Z0-9]+/',$file,$data); // return !empty($data[0])?substr(end($data[0]),1):''; // } //第九种 // function get_extension($file){ // return str_replace('.','',strrchr($file,'.')); // } //暂时想这么多,以后想起来再补充 $file = "http://10.31.63.8:8081/M00/00/09/Ch8_CFaaMLqAO87JAACePvS0ZRk.webp"; $data = get_extension($file); var_export($data);
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