Check ps -p availability in proc_nice test

Author: nikic

ext/standard/tests/general_functions/proc_nice_basic.phpt

@@ -9,6 +9,10 @@ Simone Gentili ([email protected])
 <?php
 if(!function_exists('proc_nice')) die("skip. proc_nice not available ");
 if(substr(strtoupper(PHP_OS), 0, 3) == 'WIN') die('skip. not for Windows');
+exec('ps -p 1 -o "pid,nice"', $output, $exit_code);
+if ($exit_code !== 0) {
+    die("skip ps -p is not available");
+}
 ?>
 --FILE--
 <?php