Revision: 64097
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at July 4, 2013 01:22 by rickygri
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<?php
function exists($url) {
// Get file contents limited to one character as
// the whole file isn't needed, only the response
// header
file_get_contents($url, NULL, NULL, 0, 1);
// Parse response
$response = $http_response_header[0];
// Split response to isolate reponse number
$split = explode(" ", $response);
// Return true if 200 header response received
if ($split[1] == "200") return true;
// Return false if 403 (not found) received
else if ($split[1] == "403") return false;
// Any other response return false
else return false;
}
// Example usage - Check to see if image exists using img src url
//$url = "http://distilleryimage8.s3.amazonaws.com/4a2813d8785e11e2893322000a1f9ca0_7asd.jpg";
$url = "http://distilleryimage8.s3.amazonaws.com/4a2813d8785e11e2893322000a1f9ca0_7.jpg/";
if (exists($url)) echo "image exists";
else echo "image does not exist";
?>
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This function can be used to check if a file exists using the HTTP header response. Example use, when looping through cached JSON objects (instagram API, etc.)
Initial Title
If file exists function - server-side
Initial Tags
php, file
Initial Language
PHP