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@ 2020-10-05T09:14:29Z

<?php

$records = [
    [
        "Id" => 151601,
        "First_name" => "John",
        "Positions" => [
            "North" => [
                "Current_Level" => 4,
                "Last_Date" => "11/7/2001",
                "Time" => "4:15 AM"
            ],
            "East" => [
                "Current_Level" => 4,
                "Last_Date" => "7/10/2003",
                "Time" => "7:30 PM"
            ],
            "South" => [
                "Current_Level" => 2,
                "Last_Date" => "8/10/2007",
                "Time" => "NA"
            ],
            "West" => [
                "Current_Par_Level" => "NA",
                "Last_Date" => "NA",
                "Time" => "NA"
            ],
        ]
    ]
];

foreach($records as &$record) {
    $record['Positions'] = array_filter(
        $record['Positions'], 
        function ($v) {
            return $v['Time'] !== 'NA';
        }
    );
}

print_r($records);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [0] => Array ( [Id] => 151601 [First_name] => John [Positions] => Array ( [North] => Array ( [Current_Level] => 4 [Last_Date] => 11/7/2001 [Time] => 4:15 AM ) [East] => Array ( [Current_Level] => 4 [Last_Date] => 7/10/2003 [Time] => 7:30 PM ) ) ) )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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