PHP Beginner Basics

Essential array functions

How do I count, push, pop, and sort arrays?

count, array_push, sort…

<?php
$nums = [3, 1, 2];
echo count($nums);
array_push($nums, 4);
array_pop($nums);
sort($nums);   // reindexes
$assoc = ['b' => 2, 'a' => 1];
ksort($assoc); // sort by key

Notes

asort sorts associative arrays by value and keeps keys.

Keywords: count · array_push · array_pop · sort · ksort

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