Fix #254: CaseInsensitiveArray not found.

src/Curl/CaseInsensitiveArray.php

@@ -0,0 +1,73 @@
+<?php
+
+namespace Curl;
+
+class CaseInsensitiveArray implements \ArrayAccess, \Countable, \Iterator
+{
+    private $container = array();
+
+    public function offsetSet($offset, $value)
+    {
+        if ($offset === null) {
+            $this->container[] = $value;
+        } else {
+            $index = array_search(strtolower($offset), array_keys(array_change_key_case($this->container, CASE_LOWER)));
+            if (!($index === false)) {
+                $keys = array_keys($this->container);
+                unset($this->container[$keys[$index]]);
+            }
+            $this->container[$offset] = $value;
+        }
+    }
+
+    public function offsetExists($offset)
+    {
+        return array_key_exists(strtolower($offset), array_change_key_case($this->container, CASE_LOWER));
+    }
+
+    public function offsetUnset($offset)
+    {
+        unset($this->container[$offset]);
+    }
+
+    public function offsetGet($offset)
+    {
+        $index = array_search(strtolower($offset), array_keys(array_change_key_case($this->container, CASE_LOWER)));
+        if ($index === false) {
+            return null;
+        }
+
+        $values = array_values($this->container);
+        return $values[$index];
+    }
+
+    public function count()
+    {
+        return count($this->container);
+    }
+
+    public function current()
+    {
+        return current($this->container);
+    }
+
+    public function next()
+    {
+        return next($this->container);
+    }
+
+    public function key()
+    {
+        return key($this->container);
+    }
+
+    public function valid()
+    {
+        return !($this->current() === false);
+    }
+
+    public function rewind()
+    {
+        reset($this->container);
+    }
+}