From 8041b26bfe9f34acfcec9e4fd0c2c0b190535709 Mon Sep 17 00:00:00 2001
From: Shawn Meyer <srbmwins@gmail.com>
Date: Thu, 12 May 2016 21:36:31 -0400
Subject: [PATCH 1/4] Update README.md

fixed typo
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 552f5b7..29cd9bb 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ If a value can not be converted you should return the following *falsy* value fo
 
 There are a few special cases:
 
-1. If an `array` is passed as *input* to `convert_to_string()`, it should a string representation of the elements, in order, as a comma separated list. For example, an input of `[1, 2, 3]` should return `1, 2, 3`, an input of `[1]` should return `1`.
+1. If an `array` is passed as *input* to `convert_to_string()`, it should be a string representation of the elements, in order, as a comma separated list. For example, an input of `[1, 2, 3]` should return `1, 2, 3`, an input of `[1]` should return `1`.
 2. If any of the *falsy* values above or the string `null` is passed as *input* to `convert_to_null()`, it should return `null`. Otherwise, it should return the original *input*.
 
 ## Just getting started?

From 86cb490819b9f299520eadb1f8b86b68844ec0e9 Mon Sep 17 00:00:00 2001
From: srbm <srbmwins@gmail.com>
Date: Thu, 19 May 2016 18:11:55 -0400
Subject: [PATCH 2/4] Good start to challenge, still failing 7 tests

---
 src/data_types.php | 54 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 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..4d20648
--- /dev/null
+++ b/src/data_types.php
@@ -0,0 +1,54 @@
+<?php 
+
+function convert_to_int($input) {
+	settype($input, "int");
+	if(is_int($input)) {
+		return $input;
+	} else {
+		return 0;
+	}}
+	
+
+function convert_to_float($input) {
+	settype($input, "float");
+	if(is_float($input)) {
+		return $input;
+	} else {
+		return 0.0;
+	}
+}
+
+function convert_to_string($input) {
+	if(is_string($input)) {
+		return $input;
+	} else {
+		return "";
+	}
+}
+
+function convert_to_bool($input) {
+	settype($input, "bool");
+	if(is_bool($input)) {
+		return $input;
+	} else {
+		return false;
+	}
+}
+
+function convert_to_array($input) {
+	settype($input, "array");
+	if(is_array($input)) {
+		return $input;
+	} else {
+		return [];
+	}
+}
+
+function convert_to_null($input) {
+	settype($input, "null");
+	if(is_null($input)) {
+		return $input;
+	} else {
+		return null;
+	}
+}
\ No newline at end of file

From d95a13a138e672128e33f3ba6d7ba8cc9f8ad665 Mon Sep 17 00:00:00 2001
From: srbm <srbmwins@gmail.com>
Date: Thu, 19 May 2016 21:47:07 -0400
Subject: [PATCH 3/4] Passed all tests, not very elegant

---
 src/data_types.php | 26 ++++++++++----------------
 1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/src/data_types.php b/src/data_types.php
index 4d20648..068c3bc 100644
--- a/src/data_types.php
+++ b/src/data_types.php
@@ -1,13 +1,8 @@
 <?php 
 
 function convert_to_int($input) {
-	settype($input, "int");
-	if(is_int($input)) {
-		return $input;
-	} else {
-		return 0;
-	}}
-	
+	return (int)$input;
+}
 
 function convert_to_float($input) {
 	settype($input, "float");
@@ -19,13 +14,13 @@ function convert_to_float($input) {
 }
 
 function convert_to_string($input) {
-	if(is_string($input)) {
-		return $input;
+	if(is_array($input)) {
+		return implode(", ", $input);
 	} else {
-		return "";
+	return (string)$input;
 	}
 }
-
+	
 function convert_to_bool($input) {
 	settype($input, "bool");
 	if(is_bool($input)) {
@@ -45,10 +40,9 @@ function convert_to_array($input) {
 }
 
 function convert_to_null($input) {
-	settype($input, "null");
-	if(is_null($input)) {
-		return $input;
-	} else {
+	if(!$input || $input === "null") {
 		return null;
+	} else {
+		return $input;
 	}
-}
\ No newline at end of file
+}

From a64dcd56412726fade0a960f2c4236d8f4c0a0fa Mon Sep 17 00:00:00 2001
From: srbm <srbmwins@gmail.com>
Date: Thu, 19 May 2016 21:59:18 -0400
Subject: [PATCH 4/4] fixed typo

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 552f5b7..29cd9bb 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ If a value can not be converted you should return the following *falsy* value fo
 
 There are a few special cases:
 
-1. If an `array` is passed as *input* to `convert_to_string()`, it should a string representation of the elements, in order, as a comma separated list. For example, an input of `[1, 2, 3]` should return `1, 2, 3`, an input of `[1]` should return `1`.
+1. If an `array` is passed as *input* to `convert_to_string()`, it should be a string representation of the elements, in order, as a comma separated list. For example, an input of `[1, 2, 3]` should return `1, 2, 3`, an input of `[1]` should return `1`.
 2. If any of the *falsy* values above or the string `null` is passed as *input* to `convert_to_null()`, it should return `null`. Otherwise, it should return the original *input*.
 
 ## Just getting started?