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A piece of php code to detect whether the remote file exists

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Release： 2016-07-25 09:00:49

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/**
php detects whether the remote file exists
by http://bbs.it-home.org
*/
function get_http_response_code($theURL) {
$headers = get_headers($theURL);
return substr($headers[0] , 9, 3);
}
/**
* Fetches all the real headers sent by the server in response to a HTTP request without redirects
* Gets the headers without redirects
*/
function get_real_headers($url,$format=0,$follow_redirect=0) {
if (!$follow_redirect ) {
//set new default options
$opts = array('http' =>
array('max_redirects'=>1,'ignore_errors'=>1)
);
stream_context_get_default($opts);
}
//get headers
$headers=get_headers($url,$format);
//restore default options
if (isset($opts)) {
$opts = array('http' =>
array ('max_redirects'=>20,'ignore_errors'=>0)
);
stream_context_get_default($opts);
}
//return
return $headers;
}
?>

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For curl judgment method, please refer to: php code for using curl to judge whether a remote file exists .

Related labels：

检测远端文件是否存在的一段php代码

source：php.cn

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