Prepare for PHP 8

src/MD_STD.php

@@ -237,7 +237,7 @@ final class MD_STD {
      * @param string  $url     URL to query.
      * @param integer $timeout Timeout in milliseconds.
      *
-     * @return resource
+     * @return CurlHandle
      */
     public static function curl_init(string $url, int $timeout) {
 
@@ -300,9 +300,7 @@ final class MD_STD {
      */
     public static function runCurlMulti(array $urls, int $timeout = 1200):array {
 
-        if (!($mh = curl_multi_init())) {
-            throw new Exception("Failed to set up multi handle");
-        }
+        $mh = curl_multi_init();
 
         $curl_array = [];
         foreach($urls as $i => $url) {
@@ -322,7 +320,7 @@ final class MD_STD {
 
         $res = [];
         foreach($urls as $i => $url) {
-            $res[$i] = curl_multi_getcontent($curl_array[$i]);
+            $res[$i] = curl_multi_getcontent($curl_array[$i]) ?: '';
         }
 
         foreach($urls as $i => $url){
@@ -508,9 +506,6 @@ final class MD_STD {
     public static function openssl_random_pseudo_bytes(int $length):string {
 
         $output = \openssl_random_pseudo_bytes($length);
-        if ($output === false) {
-            throw new Exception("Failed generating random pseudo bytes using openssl_random_pseudo_bytes");
-        }
         return $output;
 
     }
@@ -576,6 +571,36 @@ final class MD_STD {
 
     }
 
+    /**
+     * Wrapper around the finfo functions to get the mime content type of a file.
+     *
+     * @param string $url Expected file path.
+     *
+     * @return string
+     */
+    public static function remote_mime_content_type(string $url):string {
+
+        if (($tmp_file = \tempnam(\sys_get_temp_dir(), "remote_mime_type_check")) === false) {
+            throw new Exception("Failed to get temporary file location");
+        }
+
+        $fp = \fopen($tmp_file, 'w');
+
+        if (!($ch = \curl_init($url))) {
+            throw new Exception("Failed to initialize curl for $url");
+        };
+
+        \curl_setopt($ch, CURLOPT_FILE, $fp);
+        \curl_exec($ch);
+        \curl_close($ch);
+
+        $mime_type = MD_STD::mime_content_type($tmp_file);
+        \unlink($tmp_file);
+
+        return $mime_type;
+
+    }
+
     /**
      * Checks if a file exists, with one of the expected mime types.
      *