If I have a variable of a type ArrayCollection how do I check if a key of a specific name exists in the collection including nesting. And if it does how do I get and change that value?
2 Answers
I guess you are talking about Doctrines ArrayCollection \Doctrine\Common\Collections\ArrayCollection.
It does implement phps native ArrayAccess interface, so have a look at the docs. Just check like:
use Doctrine\Common\Collections\ArrayCollection;
$myCollection = new ArrayCollection(array('testKey' => 'testVal'));
var_dump(isset($myCollection['testKey']));
It does also implement its own method from the Collection interface.
/**
* Checks whether the collection contains an element with the specified key/index.
*
* @param string|integer $key The key/index to check for.
*
* @return boolean TRUE if the collection contains an element with the specified key/index,
* FALSE otherwise.
*/
public function containsKey($key);
For nested objects there is no build in method, you have to traverse the collection yourself like you would do with a normal array.
Comments
The way that I found was to use the toArray() method in the ArrayCollection object and then use the array_search function:
$newArray = $arrayCollectionObject->toArray();
$keyThatIneed = array_search($value, $newArray);
