+ $page = 0;
+
+ $pdfinfo = System::which('pdfinfo');
+
+ if (!file_exists($file) || empty($pdfinfo)) {
+ return $page;
+ }
+
+ $cmd = "{$pdfinfo} {$file}";
+
+ $ret = `$cmd`;
+
+ $info = explode("\n", $ret);
+
+ foreach ($info as $i){
+
+ if(!preg_match('/^Pages:[\s]*([0-9]+)/', $i, $matches)){
+ continue;
+ }