Online PHP editor | rfc for qmfFp

@ 2021-03-04T06:39:56Z

<?php
/**
 * Given an array and a set of `old => new` keys,
 * will recursively replace all array keys that
 * are old with their corresponding new value.
 *
 * @param mixed $array
 * @param array $old_to_new_keys
 *
 * @return array
 */
function array_replace_keys($array, array $old_to_new_keys)
{
	if(!is_array($array)){
		return $array;
	}

	$temp_array = [];
	$ak = array_keys($old_to_new_keys);
	$av = array_values($old_to_new_keys);

	foreach($array as $key => $value){
		if(array_search($key, $ak, true) !== false){
			$key = $av[array_search($key, $ak)];
		}

		if(is_array($value)){
			$value = array_replace_keys($value, $old_to_new_keys);
		}

		$temp_array[$key] = $value;
	}

	return $temp_array;
}

$old = array(
       'a' => 'blah',
       'b' => 'key',
       'c' => 'amazing',
       'd' => array(
                0 => 'want to replace',
                1 => 'yes I want to'
              )
       );
$replace = ["a" => "AA", 1 => 11];

var_export(array_replace_keys($old, $replace));

Output for git.master, git.master_jit, rfc.property-hooks: array ( 'AA' => 'blah', 'b' => 'key', 'c' => 'amazing', 'd' => array ( 0 => 'want to replace', 11 => 'yes I want to', ), )

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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