diff --git a/data_types.php b/data_types.php
new file mode 100644
index 0000000..8cc068b
--- /dev/null
+++ b/data_types.php
@@ -0,0 +1,59 @@
+<?php
+
+function convert_to_int($input) {
+  if($input > 0) {
+    $conval = intval($input);
+  } else {
+    $conval = 0;
+}
+  return $conval;
+}
+
+function convert_to_float($input) {
+  if($input > 0) {
+    $conval = floatval($input);
+  } else {
+  $conval = 0.0;
+}
+  return $conval;
+  }
+
+function convert_to_string($input = '') {
+  if(is_array($input)) {
+    $conval = implode(", ", $input);
+  } else if($input) {
+    $conval = strval($input);
+  } else {
+  $conval = '';
+}
+  return $conval;
+}
+
+function convert_to_bool($input = null) {
+  if($input) {
+    $conval = boolval($input);
+  } else {
+    $conval = false;
+}
+  return $conval;
+}
+
+function convert_to_array($input = 0) {
+  if(!is_array($input)) {
+    $conval = (array) $input;
+  } else {
+
+    $conval = $input;
+  }
+    return $conval;
+}
+
+  function convert_to_null($input){
+    if(is_null($input)) {
+      $conval = null;
+    } else {
+      $conval = $input;
+    }
+    return $conval;
+  }
+  ?>
diff --git a/src/data_types.php b/src/data_types.php
new file mode 100644
index 0000000..76bff4b
--- /dev/null
+++ b/src/data_types.php
@@ -0,0 +1,59 @@
+<?php
+
+function convert_to_int($input) {
+  if($input > 0) {
+    $conval = intval($input);
+  } else {
+    $conval = 0;
+}
+  return $conval;
+}
+
+function convert_to_float($input) {
+  if($input > 0) {
+    $conval = floatval($input);
+  } else {
+  $conval = 0.0;
+}
+  return $conval;
+  }
+
+function convert_to_string($input) {
+  if(is_array($input)) {
+    $conval = implode(", ", $input);
+  }  else if (!$input){
+    $conval = '';
+  } else {
+    $conval = strval($input);
+}
+  return $conval;
+}
+
+function convert_to_bool($input = null) {
+  if($input) {
+    $conval = boolval($input);
+  } else {
+    $conval = false;
+}
+  return $conval;
+}
+
+function convert_to_array($input) {
+  if($input === null) {
+    return [];
+  } else if(is_array($input)) {
+    return  $input;
+  } else {
+    return [$input];
+  }
+}
+
+  function convert_to_null($input){
+    if(!$input || $input === 'null') {
+      return null;
+    } else {
+      return $input;
+    }
+  }
+
+  ?>