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@ 2022-03-29T09:07:42Z

<?php

$array = [
	[
		"id" => '6230061c0e88d709ca0d7bbc',
		'name' => 'Mobile SamSung',
		'slug' => 'mobile-samsung',
		'createdAt' => '1648006346'

	],
	[
		"id" => '5d1eff529a426778d4b92383',
		'name' => 'Mobile Iphone',
		'slug' => 'mobile-iphone',
		'createdAt' => '1647314181'
	],
	[
		"id" => '5d1eff6b9a426778d4b92dc4',
		'name' => 'Mobile SamSung',
		'slug' => 'mobile-samsung',
		'createdAt' => '1647314460'

	],
	[
		"id" => '5f894011266aea580b028cb0',
		'name' => 'Mobile LG',
		'slug' => 'mobile-lg',
		'createdAt' => '1647314456'

	]
];

$newArray = [];
foreach ($array as $key => $value) {
	$findIndex = array_search($value['slug'], array_column($newArray, 'slug'));
	if ($findIndex === false) {
		$newArray[] = $value;
	} elseif ($findIndex !== false && $newArray[$findIndex]['createdAt'] <= $value['createdAt']) {
		$newArray[$findIndex] = $value;
	}
}

print_r($newArray);

Output for rfc.property-hooks, git.master, git.master_jit: Array ( [0] => Array ( [id] => 6230061c0e88d709ca0d7bbc [name] => Mobile SamSung [slug] => mobile-samsung [createdAt] => 1648006346 ) [1] => Array ( [id] => 5d1eff529a426778d4b92383 [name] => Mobile Iphone [slug] => mobile-iphone [createdAt] => 1647314181 ) [2] => Array ( [id] => 5f894011266aea580b028cb0 [name] => Mobile LG [slug] => mobile-lg [createdAt] => 1647314456 ) )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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