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@ 2017-07-11T17:21:30Z

<?php

    /**
     * Returns list of subdomains
     * @param string $domain
     * @return array
     */
    function getAllSubDomain($domain)
    {
        //strip '<prefix>:' first
        $dpos = strpos($domain, ':');
        if ($dpos !== false) {
            $domain = substr($domain, $dpos+1);
        } else {
            $domain = $domain;
        }

        $domainParts = explode('.', str_replace("'", '', $domain));

        $ret = array();
        for ($off = sizeof($domainParts) -1; $off >= 0; $off--) {
            $ret[] = implode('.', array_slice($domainParts, $off));
        }

        return $ret;
    }
    
    $t = getAllSubdomain('test.sub.domain.com');
    var_export($t);
    
    
     $queryPart = "('" . implode("','", $t) . "')";
     
     var_export($queryPart);

Output for git.master, git.master_jit, rfc.property-hooks: array ( 0 => 'com', 1 => 'domain.com', 2 => 'sub.domain.com', 3 => 'test.sub.domain.com', )'(\'com\',\'domain.com\',\'sub.domain.com\',\'test.sub.domain.com\')'

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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