3v4l.org

run code in 500+ PHP versions simultaneously

@ 2026-04-08T22:35:48Z

<?php

    function getRegexUri(string $uri): string
    {
        return '#^' . \preg_replace_callback(
            '/\/\{(\??)([a-zA-Z_][a-zA-Z0-9_]*)(?::([^}]+)|<([^>]+)>)?}/',
            function (array $matches): string {
                $regex = $matches[3] ?? null;
                $type = $matches[4] ?? null;

                if ($regex === '') {
                    $regex = null;
                }

                $pattern = $regex ?? $this->patterns->get($type ?? '')->regex ?? '[^/]+';
                $segment = '(?<' . $matches[2] . '>' . $pattern . ')';

                return $matches[1] === '?'
                    ? '(?:/' . $segment . ')?'
                    : '/' . $segment;
            },
            $uri,
        ) . '$#';
    }
    
    $v = '/test-http-{code:\d+}/';
    
    var_dump(getRegexUri($v));

Output for rfc.property-hooks, git.master, git.master_jit: string(26) "#^/test-http-{code:\d+}/$#"

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

2022-12-01 RFC: Property hooks - included in PHP 8.4
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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 previewkey bindings

62.69 ms | 2702 KiB | 4 Q