Code snippets
Code snippets
Copy-ready answers to everyday coding questions, each with a short explanation. Laravel, PHP, JavaScript, SQL, Bash and more.
2 snippets tagged #array · Show all
PHP
October 15, 2026
PHP arrow functions with array_map and array_filter
Arrow functions (fn) are one-line closures that capture outer variables by value automatically. Note that array_filter keeps keys, so wrap it in array_values()...
<?php
$nums = range(1, 10);
$result = array_map(fn ($n) => $n ** 2, array_filter($nums, fn ($n) => $n % 2 === 0));
PHP
October 8, 2026
PHP convert array to JSON with error handling and round-trip verification
Converts a PHP array to a JSON string, throws a JsonException on failure, and checks the result is valid and decodes back to the original data. Use it when you...
<?php
declare(strict_types=1);