diff --git a/data_types.php b/data_types.php
new file mode 100644
index 0000000..c22b818
--- /dev/null
+++ b/data_types.php
@@ -0,0 +1,77 @@
+<?php
+    $array = [1, 3, 5];
+?>
+
+<?php
+
+   function convert_to_int($input) {
+        echo intval($input);
+}
+
+convert_to_int("one");
+   
+?>    
+ </br>
+<?php
+
+   function convert_to_float($input) {
+       if ($input == 0) {
+           echo "0.0";
+       } else 
+        echo floatval($input);
+}
+
+convert_to_float(6.54);
+    
+?>    
+ </br>
+
+<?php
+
+   function convert_to_string($input) {
+       if (is_array($input)) {
+           $imp = implode(",", $input);
+           return $imp;
+       } else return strval($input);
+}
+
+var_dump(convert_to_string($array));
+    
+?>  
+</br>
+<?php
+
+   function convert_to_bool($input) {
+       if (is_bool($input)) {
+           echo boolval($input);
+       } else echo FALSE;
+}
+
+convert_to_bool(TRUE);
+    
+?>  
+</br>
+<?php
+
+   function convert_to_array($input) {
+       if (is_array($input)) {
+           return ($input);
+       } else echo "[]";
+}
+
+var_dump(convert_to_array($array));
+    
+?>  
+
+</br>
+<?php
+
+   function convert_to_null($input) {
+       if ($input != NULL) {
+           return ($input);
+       } else return (NULL);
+}
+
+var_dump(convert_to_null(0));
+    
+?>