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run code in 300+ PHP versions simultaneously

@ 2018-09-22T21:30:46Z

<?php
function badwords_full($string, &$bad_references) {
    static $bad_counter;
    static $bad_list;
    static $bad_list_q;
    if(!isset($bad_counter)) {
        $bad_counter = 0;
        $bad_list = badwords_list();
        $bad_list_q = array_map('preg_quote', $bad_list);
    }
    return preg_replace_callback('~('.implode('|', $bad_list_q).')~',
        function($matches) use (&$bad_counter, &$bad_references) {
            $bad_counter++;
            $bad_references[$bad_counter] = $matches[0];
            return mb_substr($matches[0], 0, 1).str_repeat('&squf;', strlen($matches[0]) - 1);
    }, $string);
}

function badwords_list() {
    # spanish
    $es = array(
        "gallina",
        "ñoño"
    );

    # english
    $en = array(
        "chicken",
        "horse"
    );

    # join all languages
    $list = array_merge($es, $en);
    usort($list, function($a,$b) {
        return strlen($b) < strlen($b);
    });
    return $list;
}
echo badwords_full('Hola en español eres un ñoño!', $bad);

Output for git.master, git.master_jit, rfc.property-hooks: Deprecated: usort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/AnPJl on line 34 Hola en español eres un ñ&squf;&squf;&squf;&squf;&squf;!

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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