Adding has() method for key checking

Updating documentation

Using PHP5.3 compatible array notation

Disabling tls on Travis to avoid 5.3.3 SSL issue

Disabling TLS on composer (travis)

Fixing typo

Trying to avoid OpenSSL error

PHP 5.3.3 crashes

Author: cfrutos

.travis.yml

@@ -1,7 +1,6 @@
 language: php
 
 php:
-  - 5.3.3
   - 5.3
   - 5.4
   - 5.5

README.md

@@ -33,6 +33,12 @@ $data->get('a.b.d');
 
 // array('E0', 'E1', 'E2')
 $data->get('a.b.e');
+
+// true
+$data->has('a.b.c');
+
+// false
+$data->has('a.b.d.j');
 ```
 
 A more concrete example:
@@ -92,6 +98,9 @@ $data->set('hosts.april', array(
     'password' => '@---S',
     'roles' => array('web'),
 ));
+
+// Check if a key exists (true to this case)
+$hasKey = $data->has('hosts.dewey.username');
 ```
 
 

composer.json

@@ -15,6 +15,11 @@
             "name": "Beau Simensen",
             "email": "[email protected]",
             "homepage": "http://beausimensen.com"
+        },
+        {
+            "name": "Carlos Frutos",
+            "email": "[email protected]",
+            "homepage": "https://github.com/cfrutos"
         }
     ],
     "require": {

src/Dflydev/DotAccessData/Data.php

@@ -159,6 +159,28 @@ public function get($key, $default = null)
         return $currentValue === null ? $default : $currentValue;
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function has($key)
+    {
+        $currentValue = &$this->data;
+        $keyPath = explode('.', $key);
+
+        for ( $i = 0; $i < count($keyPath); $i++ ) {
+            $currentKey = $keyPath[$i];
+            if (
+                !is_array($currentValue) ||
+                !isset($currentValue[$currentKey])
+            ) {
+                return false;
+            }
+            $currentValue = &$currentValue[$currentKey];
+        }
+
+        return true;
+    }
+
     /**
      * {@inheritdoc}
      */

src/Dflydev/DotAccessData/DataInterface.php

@@ -46,6 +46,15 @@ public function remove($key);
      */
     public function get($key, $default = null);
 
+    /**
+     * Check if the key exists
+     *
+     * @param string $key
+     *
+     * @return bool
+     */
+    public function has($key);
+
     /**
      * Get a data instance for a key
      *

tests/Dflydev/DotAccessData/DataTest.php

@@ -146,6 +146,23 @@ public function testGet()
         $this->runSampleDataTests($data);
     }
 
+    public function testHas()
+    {
+        $data = new Data($this->getSampleData());
+
+        foreach (
+            array('a', 'i', 'b.d', 'f.g.h', 'h.i', 'b.d.d1') as $existentKey
+        ) {
+            $this->assertTrue($data->has($existentKey));
+        }
+
+        foreach (
+            array('p', 'b.b1', 'b.c.C1', 'h.i.I', 'b.d.d1.D1') as $notExistentKey
+        ) {
+            $this->assertFalse($data->has($notExistentKey));
+        }
+    }
+
     public function testGetData()
     {
         $wrappedData = new Data(array(