Added data_types.php file

src/data_types.php

@@ -0,0 +1,45 @@
+<?php
+
+function convert_to_int($input){
+	return (int)$input;
+}
+//echo convert_to_int("1");
+
+function convert_to_float($input){
+	return (float)$input;
+}
+
+//var_dump(convert_to_float("ohddj"));
+
+function convert_to_string($input){
+	if(is_array($input)){
+		return implode(", ",$input);
+	} else{
+		return (string)$input;
+	}
+}
+//$a=array(2,3);
+ //var_dump(convert_to_string($a));
+
+function convert_to_bool($input){
+	return (bool)$input;
+}
+
+//var_dump(convert_to_boolean(7));
+
+function convert_to_array($input){
+	return (array)$input;
+}
+
+//var_dump(convert_to_array(null));
+
+function convert_to_null($input){
+	if(empty($input) || $input === "null"){
+		return (unset)$input;
+	} else {
+		return $input;
+	}
+}
+//$a = array(2, 3);
+//$a = true;
+//var_dump(convert_to_null("null"));