php 检测因特网址是否有效
php 检测网址是否有效
1. ?网址的格式:
?
function checkUrl($weburl) { return !ereg("^http(s)*://[_a-zA-Z0-9-]+(.[_a-zA-Z0-9-]+)*$", $weburl); }
2 .?判断http 地址是否有效
?
function url_exists($url){ $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,$url); curl_setopt($ch, CURLOPT_NOBODY, 1); // 不下载 curl_setopt($ch, CURLOPT_FAILONERROR, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); return (curl_exec($ch)!==false) ? true : false;}
?
或者
?
function img_exists($url) { return file_get_contents($url,0,null,0,1) ? true : false;}
?
或者
?
function url_exists($url) { $head = @get_headers($url); return is_array($head) ? true : false;}
?
实例:
?
$url='http://www.qq.com';echo url_exists($url);
?
?
?
?

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