3v4l.org

run code in 300+ PHP versions simultaneously

@ 2016-05-06T04:24:42Z

<?php
$array = array(
    'green' => 'keyword',
    'orange',
    'keyword',
    'black' => array(
        'purple' => 'text',
        'brown',
        'pink' => 'keyword'
    ),
    'white' => array(
        'red',
        'yellow' => 'keyword',
        'blue'
    ),
    'violet',
    'gray'
);

$arr = array();

$str = 'keyword';
$arr[] = array_filter($array, function($var) use ($str) {
			global $arr;
			if(is_array($var)){				
				$arr[] = array_filter($var, function($var2) use ($str) {
					return preg_match("/$str/i", $var2);
				});
			}else{
				return preg_match("/$str/i", $var);
			}			
		});

function getL2Keys($array){
    $result = array();
    foreach($array as $sub) {
        $result = array_merge($result, $sub);
    }        
    return $result;
}

$arr = getL2Keys($arr);
echo '<pre>';
print_r($arr);

Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: <pre>Array ( [pink] => keyword [yellow] => keyword [green] => keyword [0] => keyword )
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 <pre>Array ( [pink] => keyword [yellow] => keyword [green] => keyword [0] => keyword )

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264 ms | 402 KiB | 228 Q