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@ 2020-01-11T14:18:59Z

<?php

$category = array(
    1 => array(
        'id' => 1,
        'parentID' => 0,
        'name' => 'SUV auto parts'
    ),
    2 => array(
        'id' => 2,
        'parentID' => 1,
        'name' => 'Engine Related'
    ),
    3 => array(
        'id' => 3,
        'parentID' => 2,
        'name' => 'Spark Plugs'
    ),
    4 => array(
        'id' => 4,
        'parentID' => 2,
        'name' => 'Engine Oil'
    ),
    5 => array(
        'id' => 5,
        'parentID' => 1,
        'name' => 'Body related'
    ),
    6 => array(
        'id' => 6,
        'parentID' => 0,
        'name' => 'Sedan auto parts'
    ),
    7 => array(
        'id' => 7,
        'parentID' => 6,
        'name' => 'Engine Related'
    ),
);

$parentId = 2; // set the parentID

foreach($category as $key => $value) {
    if($value['parentID'] == $parentId) {
        echo '<pre>';
        print_r($value); // print matching records
        echo '</pre>';
    }
}

Output for git.master, git.master_jit, rfc.property-hooks: <pre>Array ( [id] => 3 [parentID] => 2 [name] => Spark Plugs ) </pre><pre>Array ( [id] => 4 [parentID] => 2 [name] => Engine Oil ) </pre>

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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