In this first video we take an overview of all the available methods on Doctrine's Collection interface.
Some of them are straightforward -
toArray - and some are more confusing and scary sounding -
The good news is, none of these are particularly difficult to use or understand - as long as you have someone sat next to you to show you how to use them. That's where I come in :)
The data set I am using throughout this tutorial series is from the Doctrine Performance Optimisations video tutorial series, but these methods work with any Doctrine result set - or in fact, any array at all.
If you don't have any data to hand, I highly recommend using Will Durand's Faker Bundle which is a perfect way to generate as much made-up / faked data as you desire. It really is very useful, and a great way to seed a project with some dummy data whether for testing or just to give a client / your boss a view of what the end result could potentially look like.
new ArrayCollection() is very straightforward.
Make sure you have the correct
use statement at the top of your class definition:
<?php namespace YourBundle\Whatever; use Doctrine\Common\Collections\ArrayCollection; // *snip snip*
And then simply
new up a new instance of
ArrayCollection as required, optionally passing in your existing array in the
$myArrayCollection = new ArrayCollection(); // or $myArray = [1,2,3,4,5]; // php 5.4+ array syntax $myArrayCollection = new ArrayCollection($myArray); // passing in the existing array via constructor
Both of these will work. If your
ArrayCollection is constructed without any data, or you need to add more data after you have instantiated your new
ArrayCollection then that couldn't be easier. Simply call
If you have found this video helpful, please consider sharing. I really appreciate it.
|1||The Basics of A Doctrine Collection||06:03|
|2||Frequently Used ArrayCollection Methods||06:58|
|3||Filter, Map, and Exists||06:11|
|4||forAll, partition, slice, and more||06:38|