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@ 2016-03-22T14:02:37Z

<?php

$array = [
    'key1' => [
        'key2' => [
            'key3' => 'YAY I GOT IT'    
        ]
    ]    
];

$keys = ['key1', 'key2', 'key3'];

function findValueForKeys($data, $keys) {
    
    $key = array_shift($keys);
    
    echo "Searching for: '$key' in: '" . print_r($data, true) . "'" . PHP_EOL;
    
    if (!is_array($data))
    {
        return $data;
    }
    
    if (array_key_exists($key, $data))
    {
        if (!is_array($data[$key]))
        {
            echo 'Got the last value. It is: ' . $data[$key] . PHP_EOL;
            
            return $data[$key];    
        }
        
        findValueForKeys($data[$key], $keys);
    }
    else
    {
        return $data;
    }
};

echo "Searching... got the value: " . findValueForKeys($array, $keys);

Output for git.master, git.master_jit, rfc.property-hooks: Searching for: 'key1' in: 'Array ( [key1] => Array ( [key2] => Array ( [key3] => YAY I GOT IT ) ) ) ' Searching for: 'key2' in: 'Array ( [key2] => Array ( [key3] => YAY I GOT IT ) ) ' Searching for: 'key3' in: 'Array ( [key3] => YAY I GOT IT ) ' Got the last value. It is: YAY I GOT IT Searching... got the value:

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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