Check ps -p availability in process title test

Author: nikic

sapi/cli/tests/cli_process_title_unix.phpt

@@ -7,7 +7,12 @@ if (PHP_SAPI !== "cli")
 if (!PHP_CLI_PROCESS_TITLE)
   die("skip process title not available (disabled or unsupported)");
 if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN')
-  die("skip");
+  die("skip Not for Windows");
+
+exec("ps -p 1", $output, $exit_code);
+if ($exit_code !== 0) {
+    die("skip ps -p is not available");
+}
 ?>
 --FILE--
 <?php