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@ 2018-08-30T11:33:01Z

<?php
$arrays = [
    "[Call xyz" => [
        "features" => [
            [
                "name" => "Display",
                "display" => "web"
            ],
            [
                "name" => "Forwarding",
                "display" => "web"
            ],
            [
                "name" => "Test",
                "display" => "web"
            ]
        ]
    ],
    "[Hidden]" => [
        "features" => [
            [
                "name" => "Display",
                "display" => "web"
            ],
            [
                "name" => "Forwarding",
                "display" => "web"
            ],
            [
                "name" => "Test",
                "display" => "web"
            ]
        ]
    ]
];


$index = 1;
foreach ($arrays as &$array) {
    if (array_key_exists($index, $array["features"]) &&
        ($array["features"][$index]["name"] === "Display" || $array["features"][$index]["name"] === "Forwarding")
    ) {
        $array["features"][$index]["checked"] = 1;
    }
}

print_r($arrays);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [[Call xyz] => Array ( [features] => Array ( [0] => Array ( [name] => Display [display] => web ) [1] => Array ( [name] => Forwarding [display] => web [checked] => 1 ) [2] => Array ( [name] => Test [display] => web ) ) ) [[Hidden]] => Array ( [features] => Array ( [0] => Array ( [name] => Display [display] => web ) [1] => Array ( [name] => Forwarding [display] => web [checked] => 1 ) [2] => Array ( [name] => Test [display] => web ) ) ) )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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