+ add the init file.

hello/init.php

+<?php
+/**
+ * This file contains functions to ouput case info in yaml format.
+ */
+
+/**
+ * Print case title.
+ * 
+ * @param  string    $title 
+ * @access public
+ * @return void
+ */
+function title($title)
+{
+    echo "title: $title\n";
+}
+
+/**
+ * Run a statement and print the output.
+ * 
+ * @param  string    $output 
+ * @access public
+ * @return void
+ */
+function run($output)
+{
+    static $firstCall = true;
+
+    if($firstCall) (print "steps: \n") && ($firstCall = false);
+
+    echo space(2) . "-\n";
+
+    $output  = trim($output);
+    $lines = explode("\n", $output);
+
+    if(count($lines) == 1) return print(space(4) . "output: $output\n");
+
+    echo space(4) . "output: |\n";
+    foreach($lines as $line) echo space(6) . trim($line) . "\n";
+}
+
+/**
+ * Print the expect section.
+ * 
+ * @param  string    $expect 
+ * @param  string    $tag        expect|expectx
+ * @access public
+ * @return void
+ */
+function expect($expect, $tag = 'expect')
+{
+    $expect  = trim($expect);
+    $lines = explode("\n", $expect);
+
+    if(count($lines) == 1) return print(space(4) . "$tag: $expect\n");
+
+    echo space(4) . "$tag: |\n";
+    foreach($lines as $line) echo space(6) . trim($line) . "\n";
+}
+
+/**
+ * Print expectx section.
+ * 
+ * @param  int    $expect 
+ * @access public
+ * @return void
+ */
+function expectx($expect)
+{
+    expect($expect, 'expectx');
+}
+
+/**
+ * Print some spaces.
+ * 
+ * @param  int    $number 
+ * @access public
+ * @return string
+ */
+function space($number)
+{
+    return str_repeat(' ', $number);
+}