Changeset 735 for trunk/lib/Utilities.inc.php

Timestamp:

Oct 30, 2020 11:44:05 PM (4 years ago)

Author:

anonymous

Message:

Minor polish. Add getHttpHeader function

File:

• trunk/lib/Utilities.inc.php (modified) (2 diffs)

trunk/lib/Utilities.inc.php

@@ -1519 +1519 @@
 * @since    02 May 2015 15:10:09
 */
-function httpExists($url)
+function httpExists($url, $timeout=5)
 {
     $ch = curl_init($url);
-    curl_setopt($ch, CURLOPT_TIMEOUT, 5);
+    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
     curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
     curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
@@ -1547 +1547 @@
     $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
     return preg_match('/^[23]\d\d$/', $http_code);
+}
+
+/*
+* Get a HTTP response header.
+*
+* @access   public
+* @param    string  $url    URL to hit.
+* @param    string  $key    Name of the header to return.
+* @param    array   $valid_response_codes   Array of acceptable HTTP return codes.
+* @return   string  Value of the http header.
+* @author   Quinn Comendant <quinn@strangecode.com>
+* @since    28 Oct 2020 20:00:36
+*/
+function getHttpHeader($url, $key, Array $valid_response_codes=[200])
+{
+    $headers = @get_headers($url, 1);
+
+    if ($headers && preg_match(sprintf('/\b(%s)\b/', join('|', $valid_response_codes)), $headers[0])) {
+        $headers = array_change_key_case($headers, CASE_LOWER);
+        $key = strtolower($key);
+        if (isset($headers[$key])) {
+            return $headers[$key];
+        }
+    }
+
+    return false;
 }