Online PHP editor | output for Biok8

@ 2024-10-01T17:15:18Z

<?php

if (!function_exists('array_find_key')) {
	function array_find_key(array $array, callable $callback)
	{
		foreach ($array as $key => $value) {
			if ($callback($value, $key)) {
				return $key;
			}
		}

		return null;
	}
}

$testcase = [
    "['foo', 1]" => ['foo', 1],
    "['foo' => 1]" => ['foo' => 1],
    "['foo' => 'bar']" => ['foo' => 'bar'],
];

echo json_encode(array_map(fn ($a) => array_find_key($a, fn ($v) => is_int($v)), $testcase), JSON_PRETTY_PRINT);

Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: { "['foo', 1]": 1, "['foo' => 1]": "foo", "['foo' => 'bar']": null }
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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