File memory_footprint_dkim.diff of Package roundcubemail-plugin-authres_status

--- a/php-dkim-0.2.2/DKIM.php	2025-03-11 15:15:24.315338097 +0100
+++ b/php-dkim-0.2.2/DKIM.php	2025-03-11 15:15:13.651839476 +0100
@@ -154,12 +154,13 @@
         $raw = (isset($this->_params['headers'])) ?
               str_replace("\r", '', $this->_params['headers'])
             : str_replace("\r", '', $this->_raw);
-        $lines = explode("\n", $raw);
         $rawHeaders = array();
         $headerVal = array();
         $counter = 0;
         $on = false;
-        foreach ($lines as $line) {
+        $pos = 0;
+        while ( ($line_end_pos = strpos($raw, "\n", $pos)) !== false ) {
+            $line = substr($raw, $pos, $line_end_pos - $pos);
             if ($on === true) {
                 if (preg_match('/^\w/', $line) !== 0 || trim($line) == '') {
                     // new header is starting or end of headers
@@ -188,6 +189,7 @@
             if (trim($line) == '') {
                 break;
             }
+            $pos = $line_end_pos + 1;
         }
         
         return $rawHeaders;