From 03d8eaed6e716cdcd666c41c94d4ef2bb60f7cf8 Mon Sep 17 00:00:00 2001
From: "honggaojob@gmail.com" <honggaojob@gmail.com>
Date: Tue, 17 May 2016 19:24:11 -0400
Subject: [PATCH] initial commit

---
 src/data_types.php | 49 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 src/data_types.php

diff --git a/src/data_types.php b/src/data_types.php
new file mode 100644
index 0000000..f680b6b
--- /dev/null
+++ b/src/data_types.php
@@ -0,0 +1,49 @@
+<?php 
+
+function convert_to_int($input){
+	return intval($input);
+}
+
+
+function convert_to_float($input){
+	return floatval($input);
+}
+
+
+
+function convert_to_string($input){
+	if(gettype($input) === "array") {
+		$res = '';
+		foreach ($input as $item ){
+			if ($res === ""){
+				$res = $item;
+			} else {
+				$res .= ', ' . $item;
+			}
+		} 
+		return $res;
+	}
+	return strval($input);
+}
+
+
+
+function convert_to_bool($input){
+	return boolval($input);
+}
+
+
+
+function convert_to_array($input){
+	return (array)($input);
+}
+
+
+function convert_to_null($input){
+	if (floatval($input) === 0.0){
+		return null;		
+	} 
+	return $input;
+}
+
+?>
\ No newline at end of file