From 876c2efd659c0a6f27c5f919ac8c82ed0870837c Mon Sep 17 00:00:00 2001
From: Matthew <matthew.thompson.a@gmail.com>
Date: Tue, 13 Sep 2016 17:56:57 -0400
Subject: [PATCH 1/8] data_types.php

---
 data_types.php | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 data_types.php

diff --git a/data_types.php b/data_types.php
new file mode 100644
index 0000000..d24b576
--- /dev/null
+++ b/data_types.php
@@ -0,0 +1,45 @@
+<?php
+//Return `0` for `convert_to_int()`
+//Return `0.0` for `convert_to_float()`
+//Return an empty string for `convert_to_string()`
+//Return `false` for `convert_to_bool()`
+//Return `[]` for `convert_to_array()`
+//Return `null` for `convert_to_null()`
+
+$input = "Ello World ";
+
+function convert_to_int($input){
+ echo (int)$input;
+}
+
+function convert_to_float($input){
+  echo (double)$input;
+}
+
+function convert_to_string($input){
+  //array to string code here should return comma seperated values in a string
+  if (bool is_array ( mixed $input )){
+    for(var i = 0; i<$input.Length; i++){
+      echo $input[i];
+    }
+  }
+  else{echo (string)$input;}
+}
+
+function convert_to_bool($input){
+  echo false;
+}
+
+function convert_to_array($input){
+ echo array($input);
+}
+
+function convert_to_null($input){
+  if( $input == 0 || $input == false){
+    echo null;
+  }else{echo true;}
+}
+
+echo convert_to_string($input);
+
+?>

From bb2004ca364e73642d8b63e2b82f7e32af20ea4c Mon Sep 17 00:00:00 2001
From: Matthew <matthew.thompson.a@gmail.com>
Date: Tue, 13 Sep 2016 18:02:44 -0400
Subject: [PATCH 2/8] test 2

---
 data_types.php | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/data_types.php b/data_types.php
index d24b576..3cef2f5 100644
--- a/data_types.php
+++ b/data_types.php
@@ -18,12 +18,13 @@ function convert_to_float($input){
 
 function convert_to_string($input){
   //array to string code here should return comma seperated values in a string
-  if (bool is_array ( mixed $input )){
-    for(var i = 0; i<$input.Length; i++){
-      echo $input[i];
-    }
-  }
-  else{echo (string)$input;}
+  // if (bool is_array ( mixed $input )){
+  //   for(var i = 0; i<$input.Length; i++){
+  //     echo $input[i];
+  //   }
+  // }
+  // else{echo (string)$input;}
+  echo (string)$input;
 }
 
 function convert_to_bool($input){

From 6c0e17c29b5e501aad4f559ad1f724b18ad902be Mon Sep 17 00:00:00 2001
From: Matthew <matthew.thompson.a@gmail.com>
Date: Tue, 13 Sep 2016 18:07:24 -0400
Subject: [PATCH 3/8] switched again

---
 data_types.php | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/data_types.php b/data_types.php
index 3cef2f5..c132349 100644
--- a/data_types.php
+++ b/data_types.php
@@ -9,36 +9,35 @@
 $input = "Ello World ";
 
 function convert_to_int($input){
- echo (int)$input;
+ return (int)$input;
 }
 
 function convert_to_float($input){
-  echo (double)$input;
+  return (double)$input;
 }
 
 function convert_to_string($input){
-  //array to string code here should return comma seperated values in a string
-  // if (bool is_array ( mixed $input )){
-  //   for(var i = 0; i<$input.Length; i++){
-  //     echo $input[i];
-  //   }
-  // }
-  // else{echo (string)$input;}
-  echo (string)$input;
+//  array to string code here should return comma seperated values in a string
+  if (bool is_array ( mixed $input )){
+    for(var i = 0; i<$input.Length; i++){
+    return $input[i];
+    }
+  }
+  else{return (string)$input;}
 }
 
 function convert_to_bool($input){
-  echo false;
+  return false;
 }
 
 function convert_to_array($input){
- echo array($input);
+ return array($input);
 }
 
 function convert_to_null($input){
   if( $input == 0 || $input == false){
-    echo null;
-  }else{echo true;}
+    return null;
+  }else{return true;}
 }
 
 echo convert_to_string($input);

From 02b4456cabe38eca30c62f1820468df09ec39ba0 Mon Sep 17 00:00:00 2001
From: Matthew <matthew.thompson.a@gmail.com>
Date: Tue, 13 Sep 2016 18:09:45 -0400
Subject: [PATCH 4/8] removed space from is_array

---
 data_types.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/data_types.php b/data_types.php
index c132349..3b3625a 100644
--- a/data_types.php
+++ b/data_types.php
@@ -18,7 +18,7 @@ function convert_to_float($input){
 
 function convert_to_string($input){
 //  array to string code here should return comma seperated values in a string
-  if (bool is_array ( mixed $input )){
+  if (bool is_array(mixed $input)){
     for(var i = 0; i<$input.Length; i++){
     return $input[i];
     }

From 6cb106a5dee8611fac8472e983975359b15aa107 Mon Sep 17 00:00:00 2001
From: Matthew <matthew.thompson.a@gmail.com>
Date: Tue, 13 Sep 2016 18:12:53 -0400
Subject: [PATCH 5/8] removed  value

---
 data_types.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/data_types.php b/data_types.php
index 3b3625a..cde637b 100644
--- a/data_types.php
+++ b/data_types.php
@@ -6,7 +6,7 @@
 //Return `[]` for `convert_to_array()`
 //Return `null` for `convert_to_null()`
 
-$input = "Ello World ";
+// $input = "Ello World ";
 
 function convert_to_int($input){
  return (int)$input;

From 55b22ac087eda9f7801b7ac0ffd057eea3ebc073 Mon Sep 17 00:00:00 2001
From: Matthew <matthew.thompson.a@gmail.com>
Date: Tue, 13 Sep 2016 18:58:47 -0400
Subject: [PATCH 6/8] var_dump test

---
 data_types.php | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/data_types.php b/data_types.php
index cde637b..85885c7 100644
--- a/data_types.php
+++ b/data_types.php
@@ -6,24 +6,30 @@
 //Return `[]` for `convert_to_array()`
 //Return `null` for `convert_to_null()`
 
-// $input = "Ello World ";
+$input = array("somethign", "two", "Three");
 
 function convert_to_int($input){
  return (int)$input;
 }
 
+
 function convert_to_float($input){
   return (double)$input;
 }
 
 function convert_to_string($input){
-//  array to string code here should return comma seperated values in a string
-  if (bool is_array(mixed $input)){
-    for(var i = 0; i<$input.Length; i++){
-    return $input[i];
+ //array to string code here should return comma seperated values in a string
+  if (is_array ($input)){
+    $length = count($input);
+    $output = "";
+
+    for($i = 0; $i < $length; $i++){
+    $output .= $input[$i] . ", ";
     }
+    return $output;
   }
-  else{return (string)$input;}
+  else{ return (string)$input;}
+  // return (string)$input;
 }
 
 function convert_to_bool($input){
@@ -40,6 +46,4 @@ function convert_to_null($input){
   }else{return true;}
 }
 
-echo convert_to_string($input);
-
 ?>

From 00bd2a8e695ab786614dbd15624b509c9d2992ea Mon Sep 17 00:00:00 2001
From: Matthew <matthew.thompson.a@gmail.com>
Date: Tue, 13 Sep 2016 19:19:53 -0400
Subject: [PATCH 7/8] working through unit tests

---
 data_types.php | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/data_types.php b/data_types.php
index 85885c7..7707fec 100644
--- a/data_types.php
+++ b/data_types.php
@@ -6,7 +6,7 @@
 //Return `[]` for `convert_to_array()`
 //Return `null` for `convert_to_null()`
 
-$input = array("somethign", "two", "Three");
+$input = array(array(2, 3), array(2, 3));
 
 function convert_to_int($input){
  return (int)$input;
@@ -24,7 +24,9 @@ function convert_to_string($input){
     $output = "";
 
     for($i = 0; $i < $length; $i++){
-    $output .= $input[$i] . ", ";
+      if($i+1 == $length) //checks if end of line removes last comma
+      {$output .= $input[$i];}
+      else{$output .= $input[$i] . ", ";}
     }
     return $output;
   }
@@ -33,11 +35,14 @@ function convert_to_string($input){
 }
 
 function convert_to_bool($input){
-  return false;
+  return (bool)$input;
 }
 
 function convert_to_array($input){
- return array($input);
+  if ($input == null){
+    return array();
+  }
+  else{return array($input);}
 }
 
 function convert_to_null($input){
@@ -46,4 +51,6 @@ function convert_to_null($input){
   }else{return true;}
 }
 
+var_dump(convert_to_array($input));
+
 ?>

From 1108a212bc839535d846d4c90c04f70d201d46b4 Mon Sep 17 00:00:00 2001
From: Matthew <matthew.thompson.a@gmail.com>
Date: Tue, 13 Sep 2016 20:03:45 -0400
Subject: [PATCH 8/8] take 201413121

---
 data_types.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/data_types.php b/data_types.php
index 7707fec..245f982 100644
--- a/data_types.php
+++ b/data_types.php
@@ -6,7 +6,7 @@
 //Return `[]` for `convert_to_array()`
 //Return `null` for `convert_to_null()`
 
-$input = array(array(2, 3), array(2, 3));
+$input = array('', array(''));
 
 function convert_to_int($input){
  return (int)$input;
@@ -42,7 +42,11 @@ function convert_to_array($input){
   if ($input == null){
     return array();
   }
-  else{return array($input);}
+  //Test if Array return  -- else place in array
+  elseif (is_array ($input)){
+    return $input;}
+  else{
+    return array($input);}
 }
 
 function convert_to_null($input){