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@ 2019-07-01T10:32:57Z

<?php
$a    = ["abc", "defs", "ghi"];
$b    = ["abcs", "def", "ghis"];
$temp = array_map(null, $a, $b);
function combinations($arrays)
{
    $result = [];
    $arrays = array_values($arrays);
    $sizeIn = sizeof($arrays);
    $size   = $sizeIn > 0 ? 1 : 0;
    foreach ($arrays as $array) {
        $size = $size * sizeof($array);
    }
    for ($i = 0; $i < $size; $i++) {
        $result[$i] = [];
        for ($j = 0; $j < $sizeIn; $j++) {
            array_push($result[$i], current($arrays[$j]));
        }
        for ($j = ($sizeIn - 1); $j >= 0; $j--) {
            if (next($arrays[$j])) {
                break;
            } elseif (isset($arrays[$j])) {
                reset($arrays[$j]);
            }
        }
    }
    return $result;
}
$res = combinations($temp);
$temp = array_map(function($item){
    return implode(" ", $item);
},$res);
foreach($temp as $val){
    echo $val."\n";
}

Output for git.master, git.master_jit, rfc.property-hooks: abc defs ghi abc defs ghis abc def ghi abc def ghis abcs defs ghi abcs defs ghis abcs def ghi abcs def ghis

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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