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@ 2020-03-12T11:35:11Z

<?php

$market_data_array =array (
    'Turkey' => 
    array (
        'Gold' => 
        array (
            2020 => 
            array (
                'March' => 
                array (
                    12 => 25000
                ),
                
            ),
            
        ),
        
    ),
    
);

$country_name = 'Turkey';
$rates_property_type = 'Silver';
$year = '2020';
$month = 'March';
$day_date = '12';
$rate_today = 8000;

$new_market_data = array(
    "".$country_name."" => array(
        "".$rates_property_type."" => array(
            "".$year."" => array(
                "".$month."" => array(
                    "".$day_date."" => "".$rate_today."",
                ),
            ),
        ),
    ),
);

$market_data_array = array_merge_recursive($market_data_array, $new_market_data);
print_r($market_data_array);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [Turkey] => Array ( [Gold] => Array ( [2020] => Array ( [March] => Array ( [12] => 25000 ) ) ) [Silver] => Array ( [2020] => Array ( [March] => Array ( [12] => 8000 ) ) ) ) )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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