diff --git a/src/Curl/ArrayUtil.php b/src/Curl/ArrayUtil.php
index c93af5167c..f73eedc4f7 100644
--- a/src/Curl/ArrayUtil.php
+++ b/src/Curl/ArrayUtil.php
@@ -12,11 +12,25 @@ class ArrayUtil
      *
      * @return boolean
      */
-    public static function is_array_assoc($array)
+    public static function isArrayAssoc($array)
     {
         return (bool)count(array_filter(array_keys($array), 'is_string'));
     }
 
+    /**
+     * Is Array Assoc
+     *
+     * @deprecated Use ArrayUtil::isArrayAssoc().
+     * @access public
+     * @param  $array
+     *
+     * @return boolean
+     */
+    public static function is_array_assoc($array)
+    {
+        return $this->isArrayAssoc($array);
+    }
+
     /**
      * Is Array Multidim
      *
@@ -25,7 +39,7 @@ public static function is_array_assoc($array)
      *
      * @return boolean
      */
-    public static function is_array_multidim($array)
+    public static function isArrayMultidim($array)
     {
         if (!is_array($array)) {
             return false;
@@ -34,6 +48,20 @@ public static function is_array_multidim($array)
         return (bool)count(array_filter($array, 'is_array'));
     }
 
+    /**
+     * Is Array Multidim
+     *
+     * @deprecated Use ArrayUtil::isArrayMultidim().
+     * @access public
+     * @param  $array
+     *
+     * @return boolean
+     */
+    public static function is_array_multidim($array)
+    {
+        return $this->isArrayMultidim($array);
+    }
+
     /**
      * Array Flatten Multidim
      *
@@ -43,7 +71,7 @@ public static function is_array_multidim($array)
      *
      * @return array
      */
-    public static function array_flatten_multidim($array, $prefix = false)
+    public static function arrayFlattenMultidim($array, $prefix = false)
     {
         $return = array();
         if (is_array($array) || is_object($array)) {
@@ -63,7 +91,7 @@ public static function array_flatten_multidim($array, $prefix = false)
                         } else {
                             $return = array_merge(
                                 $return,
-                                self::array_flatten_multidim(
+                                self::arrayFlattenMultidim(
                                     $value,
                                     $prefix ? $prefix . '[' . $key . ']' : $key
                                 )
@@ -78,6 +106,21 @@ public static function array_flatten_multidim($array, $prefix = false)
         return $return;
     }
 
+    /**
+     * Array Flatten Multidim
+     *
+     * @deprecated Use ArrayUtil::arrayFlattenMultidim().
+     * @access public
+     * @param  $array
+     * @param  $prefix
+     *
+     * @return array
+     */
+    public static function array_flatten_multidim($array, $prefix = false)
+    {
+        return $this->arrayFlattenMultidim($array, $prefix);
+    }
+
     /**
      * Array Random
      *
@@ -86,8 +129,22 @@ public static function array_flatten_multidim($array, $prefix = false)
      *
      * @return mixed
      */
-    public static function array_random($array)
+    public static function arrayRandom($array)
     {
         return $array[mt_rand(0, count($array) - 1)];
     }
+
+    /**
+     * Array Random
+     *
+     * @deprecated Use ArrayUtil::arrayRandom().
+     * @access public
+     * @param  $array
+     *
+     * @return mixed
+     */
+    public static function array_random($array)
+    {
+        return $this->arrayRandom($array);
+    }
 }
diff --git a/src/Curl/Curl.php b/src/Curl/Curl.php
index 8003cd3448..fd4836fa9c 100644
--- a/src/Curl/Curl.php
+++ b/src/Curl/Curl.php
@@ -157,8 +157,8 @@ interface_exists('JsonSerializable', false) &&
             // Manually build a single-dimensional array from a multi-dimensional array as using curl_setopt($ch,
             // CURLOPT_POSTFIELDS, $data) doesn't correctly handle multi-dimensional arrays when files are
             // referenced.
-            if (ArrayUtil::is_array_multidim($data)) {
-                $data = ArrayUtil::array_flatten_multidim($data);
+            if (ArrayUtil::isArrayMultidim($data)) {
+                $data = ArrayUtil::arrayFlattenMultidim($data);
             }
 
             // Modify array values to ensure any referenced files are properly handled depending on the support of
diff --git a/src/Curl/MultiCurl.php b/src/Curl/MultiCurl.php
index e35a39bc78..5deddb2a8a 100644
--- a/src/Curl/MultiCurl.php
+++ b/src/Curl/MultiCurl.php
@@ -952,7 +952,7 @@ private function initHandle($curl)
         // Use a random proxy for the curl instance when proxies have been set
         // and the curl instance doesn't already have a proxy set.
         if (is_array($this->proxies) && $curl->getOpt(CURLOPT_PROXY) === null) {
-            $random_proxy = ArrayUtil::array_random($this->proxies);
+            $random_proxy = ArrayUtil::arrayRandom($this->proxies);
             $curl->setProxy($random_proxy);
         }
 
diff --git a/tests/PHPCurlClass/PHPCurlClassTest.php b/tests/PHPCurlClass/PHPCurlClassTest.php
index ae0c06f093..50ce07f497 100644
--- a/tests/PHPCurlClass/PHPCurlClassTest.php
+++ b/tests/PHPCurlClass/PHPCurlClassTest.php
@@ -18,7 +18,7 @@ public function testExtensionsLoaded()
 
     public function testArrayAssociative()
     {
-        $this->assertTrue(\Curl\ArrayUtil::is_array_assoc(array(
+        $this->assertTrue(\Curl\ArrayUtil::isArrayAssoc(array(
             'foo' => 'wibble',
             'bar' => 'wubble',
             'baz' => 'wobble',
@@ -27,7 +27,7 @@ public function testArrayAssociative()
 
     public function testArrayIndexed()
     {
-        $this->assertFalse(\Curl\ArrayUtil::is_array_assoc(array(
+        $this->assertFalse(\Curl\ArrayUtil::isArrayAssoc(array(
             'wibble',
             'wubble',
             'wobble',
@@ -3457,6 +3457,18 @@ public function testUnsetHeader()
         $this->assertEquals('', $curl->response);
     }
 
+    public function testRemoveHeader()
+    {
+        $curl = new Curl();
+        $curl->get(Test::TEST_URL);
+        $this->assertEquals('127.0.0.1:8000', $curl->requestHeaders['host']);
+
+        $curl = new Curl();
+        $curl->removeHeader('HOST');
+        $curl->get(Test::TEST_URL);
+        $this->assertEquals('', $curl->requestHeaders['host']);
+    }
+
     public function testGetInfo()
     {
         $test = new Test();