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@ 2015-10-21T13:52:10Z

<?php

abstract class wtf {
    function array_merge_recursive_distinct() {
    	$arrays = func_get_args();
    	$base = array_shift($arrays);
    
    	foreach ($arrays as $array) {
    		reset($base); //important
    		while (list($key, $value) = @each($array)) {
    			if (is_array($value) && @is_array($base[$key])) {
    				$base[$key] = self::array_merge_recursive_distinct($base[$key], $value);
    			} else {
    				$base[$key] = $value;
    			}
    		}
    	}
    
    	return $base;
    }
}
	
$a = array(
    "exists" => 1,
    "doesnotexist" => 1,
    "arraytest" => array(
        "exists" => 1,
        "doesnotexist" => 1
    )
);

$b = array(
    "exists" => 2,
    "arraytest" => array(
        "exists" => 2,
    )
);

$c = wtf::array_merge_recursive_distinct($a, $b);

print_r($c);

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Non-static method wtf::array_merge_recursive_distinct() cannot be called statically in /in/TWFdk:39 Stack trace: #0 {main} thrown in /in/TWFdk on line 39
Process exited with code 255.

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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