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@ 2018-05-06T11:52:48Z

<?php
$bbcodes = [
    '[URL]www.no.http.example.com[/URL]',
    '[url]https://any.com/any[/url]',
    '[url="nourl"]nourl[/url]',
    '[URL="https://any.com/any?any=333"]text text[/URL]',
    '[url="http://www.emptyTEXT.com"][/url]',
    '[url]http://www.any.com/any?any=44#sss[/url]',
    '[url="https://conflictinglink"]http://differenturl[/url]'
];

foreach ($bbcodes as $bbcode) {
    echo preg_replace_callback('~\[url(?:](https?://[^[]+)|(?:="(https?://[^"]+)")](.+?))\[/url]~i',
                          function($m) {
                              if (isset($m[2])) {
                                  return "<a href=\"{$m[2]}\">{$m[3]}</a>";
                              }
                              return "<a href=\"{$m[1]}\">{$m[1]}</a>";
                          },
                          $bbcode);
    echo "\n---\n";
}

Output for git.master, git.master_jit, rfc.property-hooks: [URL]www.no.http.example.com[/URL] --- <a href="https://any.com/any">https://any.com/any</a> --- [url="nourl"]nourl[/url] --- <a href="https://any.com/any?any=333">text text</a> --- [url="http://www.emptyTEXT.com"][/url] --- <a href="http://www.any.com/any?any=44#sss">http://www.any.com/any?any=44#sss</a> --- <a href="https://conflictinglink">http://differenturl</a> ---

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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

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