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@ 2015-04-23T07:00:47Z

<?php
$arrVal =  array (
    '22' => array(
        '0' => 60,
        '29' => array(
            '0' => 6
        ),
        '30' => array (
            '0' => 5,
            '1' => 8
        ),
        '31' => array (
            '0' => 7,
            '1' => 9,
            '2' => 14,
            '3' => 26
        )
    ),
    '23' =>  12,
    '35' => 10,
    '42' => 22
);
//60[6][5||8][7||9||14||26]|12|10|22
$constructedValue = "";
$glue = "||";
echo $constructedValue = implodeMultiArr($arrVal,$glue);
function implodeMultiArr($arrVal,$glue) {
    $i = 0;
    $constructedValue = "";
    foreach ( $arrVal as $k=>$v) {
        if ( is_array($v) ) {
            $constructedValue .= !empty($constructedValue)  ? "[".implodeMultiArr($v,$glue)."]" : implodeMultiArr($v)."]" ;
        } else {
            $constructedValue .=  !empty($constructedValue)  ? $glue.$v : $v ;
        }
        $i++;
    }
    return $constructedValue;
}

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught ArgumentCountError: Too few arguments to function implodeMultiArr(), 1 passed in /in/lSWVA on line 32 and exactly 2 expected in /in/lSWVA:27 Stack trace: #0 /in/lSWVA(32): implodeMultiArr(Array) #1 /in/lSWVA(26): implodeMultiArr(Array, '||') #2 {main} thrown in /in/lSWVA on line 27
Process exited with code 255.

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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