- count: documentation ( source)
<?php
$flat = ['a', 'b', 'c'];
$treeish = ['a', 'b' => ['x', 'y', 'z'], 'c'];
echo 'count($flat): ' . count($flat) . PHP_EOL;
echo 'count($flat, 1): ' . count($flat, 1) . PHP_EOL;
echo 'count($treeish): ' . count($treeish) . PHP_EOL;
echo 'count($treeish, 1): ' . count($treeish, 1) . PHP_EOL;