Online PHP editor | output for Hs5R5

@ 2025-11-22T09:36:04Z

<?php

echo "BEFORE" . PHP_EOL . PHP_EOL;
$myArray = [
    'test'=> ['label'=> ['show'=> false]]
];

$myArray[array_key_last($myArray)]['label']['show'] = true;
var_dump($myArray);

echo PHP_EOL . PHP_EOL.  "AFTER" . PHP_EOL . PHP_EOL;

$myArray = [
    'test'=> ['label'=> ['show'=> false]]
];

array_last($myArray)['label']['show'] = true;
var_dump($myArray);

Output for 8.5.0 - 8.5.1: BEFORE array(1) { ["test"]=> array(1) { ["label"]=> array(1) { ["show"]=> bool(true) } } } AFTER array(1) { ["test"]=> array(1) { ["label"]=> array(1) { ["show"]=> bool(false) } } }
Output for 8.1.34, 8.2.30, 8.3.5 - 8.3.29, 8.4.9 - 8.4.16: BEFORE array(1) { ["test"]=> array(1) { ["label"]=> array(1) { ["show"]=> bool(true) } } } AFTER Fatal error: Uncaught Error: Call to undefined function array_last() in /in/Hs5R5:17 Stack trace: #0 {main} thrown in /in/Hs5R5 on line 17
Process exited with code 255.

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