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@ 2019-09-01T05:26:58Z

<?php

$data = array (
    0 => 
    array (
        'name' => 'Viettel',
        'data' => 
        array (
            0 => '1559881644000,500'
        ),
        
    ),
    1 => 
    array (
        'name' => 'FPT',
        'data' => 
        array (
            0 => '1559994465000,172'
        ),
        
    ),
    2 => 
    array (
        'name' => 'MobiFone',
        'data' => 
        array (
            0 => '1559997314000,11164'
        ),
        
    ),
    3 => 
    array (
        'name' => 'Vietnamobile',
        'data' => 
        array (
            0 => '1559993699000,1246'
        ),
        
    ),
    4 => 
    array (
        'name' => 'Viettel',
        'data' => 
        array (
            0 => '1560000096000,47886'
        ),
        
    ),
    5 => 
    array (
        'name' => 'VinaPhone',
        'data' => 
        array (
            0 => '1559997553000,11132'
        ),
        
    ),
    6 => 
    array (
        'name' => 'VNPT',
        'data' => 
        array (
            0 => '1559993066000,84'
        ),
        
    )
);
$result = array();
foreach ($data as $itemData) {
    if (($k = array_search($itemData['name'], array_column($result, 'name'))) !== false) {
        $result[$k]['data'] = array_merge($result[$k]['data'], $itemData['data']);
    }
    else $result[] = $itemData;
}
print_r($result);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [0] => Array ( [name] => Viettel [data] => Array ( [0] => 1559881644000,500 [1] => 1560000096000,47886 ) ) [1] => Array ( [name] => FPT [data] => Array ( [0] => 1559994465000,172 ) ) [2] => Array ( [name] => MobiFone [data] => Array ( [0] => 1559997314000,11164 ) ) [3] => Array ( [name] => Vietnamobile [data] => Array ( [0] => 1559993699000,1246 ) ) [4] => Array ( [name] => VinaPhone [data] => Array ( [0] => 1559997553000,11132 ) ) [5] => Array ( [name] => VNPT [data] => Array ( [0] => 1559993066000,84 ) ) )

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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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