3v4l.org

run code in 300+ PHP versions simultaneously

@ 2013-11-11T18:51:35Z

<?php

    function combineColumns(array $row, $separator) // {{{
    {
        $combined = array();

        foreach ($row as $key => $value) {
            if (false !== strpos($key, $separator)) {
                $parts = explode($separator, $key);
                $pkey = array_pop($parts);
                $ptr = &$combined;

                while (null !== ($part = array_shift($parts))) {
                    if (!isset($ptr[$part]) || !is_array($ptr[$part])) {
                        $ptr[$part] = array();
                    }
                    $ptr = &$ptr[$part];
                }

                $ptr[$pkey] = $value;
                unset($ptr);

            } else {
                $combined[$key] = $value;
            }
        }

        return $combined;
	}

	print_r(combineColumns(array(
		'A'     => 1,
		'B_C'   => 2,
        'B_D_A' => 3,
        'D_K_F' => 4,
    ), '_'));

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [A] => 1 [B] => Array ( [C] => 2 [D] => Array ( [A] => 3 ) ) [D] => Array ( [K] => Array ( [F] => 4 ) ) )

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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

preferences:dark modelive preview

34.12 ms | 402 KiB | 8 Q