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@ 2019-06-24T08:00:18Z

<?php

$input = [
    [
        "prefix" => "+49-6151", 
        "number" => "8844-057",
    ],
    [
        "prefix" => "0049-6151", 
        "number" => "8844-057",
    ],
    [
        "prefix" => "++49 06151", 
        "number" => "8844-057",
    ],
];



function fixPrefix($prefix) {
    $prefix = preg_replace("/^(\+{1,2}|00)\d+/", '', $prefix);
    $prefix = preg_split("/\D/", $prefix);
    $prefix = array_filter($prefix, function($i) {return !!$i;});
    $prefix = implode($prefix);
    $prefix = preg_replace("/^(?!0)/", "0", $prefix);

    return $prefix;
}

function fixNumber($number) {
    $number = preg_split("/\D/", $number);
    $number = array_filter($number, function($i) {return !!$i;});
    $number = implode($number, " ");
    return $number;
}

$output = array_map(
    function($i) {
    return [
        "prefix" => fixPrefix($i["prefix"]),
        "number" => fixNumber($i["number"]),
    ];
}, $input);

print_r("Input\n");
print_r($input);
print_r("Output\n");
print_r($output);

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /in/uRM6S:33 Stack trace: #0 /in/uRM6S(33): implode(Array, ' ') #1 /in/uRM6S(41): fixNumber(Array) #2 [internal function]: {closure}(Array) #3 /in/uRM6S(37): array_map(Object(Closure), Array) #4 {main} thrown in /in/uRM6S on line 33
Process exited with code 255.

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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