An anonymous function in a php library is incompatible with php 5.2 -

how can convert following anonymous function, found in php library using, compatible php 5.2 (which not support anonymous functions):

    curl_setopt($curl, curlopt_writefunction, function($handle, $data) use (&$headers, &$body, &$header_length, $max_data_length) {         $body .= $data;          if ($headers == '') {             $headers_end = strpos($body, "\r\n\r\n");             if ($headers_end !== false) {                 $header_length = $headers_end;                 $headers = substr($body, 0, $header_length);                 $body = substr($body, $header_length + 4);                   # have headers, if content type not html,                 # not need download else. prevents downloading                 # images, videos, pdfs, etc. won't contain redirects                  # until php 5.4, can't import $this lexical variable closure,                 # need duplicate code contenttypefromheader()                 # , hashtmlcontenttype()                 if (preg_match('/^\s*content-type:\s*([^\s;\n]+)/im', $headers, $matches)) {                     if (stripos($matches[1], 'html') === false) { return 0; }                 }             }         }          # if have downloaded maximum amount of content, we're done.         if (($header_length + strlen($body)) > $max_data_length) { return 0; }          return strlen($data);     }); 

thank you!

you'll need convert anonymous function named function , reference in curl_setopt call, approximately thus:

function curl_writefunction_callback($handle, $data) {   global $headers;   global $body;   global $header_length;   global $max_data_length;   # [function body here] };  curl_setopt($curl, curl_writefunction, "curl_writefunction_callback");