Question

PHP判断网址是否有效的最好方法

Answer 1

判断一个url能否正常访问，避免使用file_get_contents时，因为url无法访问，而出现致命错误，终止程序的问题。
$url = ‘http://www.veryhuo.com’;
$ch = curl_init();
$timeout = 10;
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);

$contents = curl_exec($ch);

if(false == $contents)
{
echo ‘Curl error: ‘ . curl_error($ch);
}
else
{