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@ 2013-10-23T06:02:39Z

<?php
$input = array(
            'a' => 'b',
            'c' => 'd',
            'e' => 'f',
            'g' => 'h',
            'i' => 'j',
            'k' => 'l',
        );
$replacement = array(
            'w' => 'x',
            'y' => 'z'
        );
$offset = -3; // illegal offset - MAGIC?
        $length = 2;

if ($replacement === null) {
            // + operator with null causes FATAL ERROR!
            $replacement = array();
        }

        if (empty($input)) {
            $input = $replacement;
            return;
        }

        // split array at $offset and prevent keys (4th argument)
        $beforeItems = array_slice($input, 0, $offset, true);
        $afterItems  = array_slice($input, $offset, null, true);

        if ($length !== null) {
            $length = (int)$length;
            // remove items
            while ($length > 0) {
                array_shift($afterItems);
                $length--;
            }
        }

        $input = $beforeItems + $replacement + $afterItems;

print_r($input);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [a] => b [c] => d [e] => f [w] => x [y] => z [k] => l )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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