php 怎么验证输入的url合法性?

Answer 1

php How to verify the legality of the entered url?-PHP Chinese website Q&A-php How to verify the legality of the entered url?-PHP Chinese website Q&A

Take a look and learn.

Answer 2

首先，定义函数check_url：

<?php
function check_url($url){
    if(!preg_match('/http:\/\/[\w.]+[\w\/]*[\w.]*\??[\w=&\+\%]*/is',$url)){
        return false;
    }
    return true;
}
?>

使用方法：

<?php
$url='需验证的url';
$isurl=check_url($url);
if($isurl){
    echo 'url地址合法';
}else{
    echo 'url地址非法';
}
?>