启用URL重写时，PHP file_exists（）无法检查文件是否存在？

问题描述：

in Zend FW:

file_exists('xx/xxx/xxxx.jpg');

returned 1, but xx/xxx/xxxx.jpg is not file or directory.

it's an error page returned by Zend FW. because it's not a file or valid url

how can I check file existence?

Zend FW中

： p>

  file_exists（'xx / xxx  /xxxx.jpg');

返回1，但xx / xxx / xxxx.jpg不是文件或目录。 p>

这是Zend FW返回的错误页面。因为它不是文件或有效网址 p>

如何检查文件是否存在？ p> div>

答

file_exists checks whether a file or directory exists. Try use is_file

答

To check for existence over HTTP, you need to check the HTTP response codes. The easiest way to do that IMO is using curl. Try this:

$url = 'http://google.com/this_does_not_exist.jpg';
$ch=curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,10);//timeout
$res = curl_exec($ch);
$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

switch ($code % 100){
    case 2:  echo "exists
"; break;
    case 3:  echo "too many redirects
"; break;
    case 4:  echo "does not exist
"; break;
    case 5:  echo "5xx error - may or may not exist once server fixed
"; break;
    default:
             echo "Something weird. HTTP response code = $code
";
}

启用URL重写时，PHP file_exists（）无法检查文件是否存在？

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