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@ 2017-11-18T06:49:48Z

<?php
$log_ret_val = Array ( "0" => Array ( "0" => Array ( "TestingLogDevice" => Array ( "Siteid" => "Mirpur_CO" ) ) ,
                       "1" => Array ( "TestingLogDevice" => Array ( "Siteid" => "Mirpur_CO" ) ) ,
  ) ,
        "1" => Array ( "0" => Array ( "TestingLogDevice" => Array ( "Tempin" => 29 ) ) ,
                      "1" => Array ( "TestingLogDevice" => Array ( "Tempin" => 29 ) ) ,
  ) ,
        "2" => Array ( "0" => Array ( "TestingLogDevice" => Array ( "Date_time" => "18.11.2017 11:03:33" ) ) ,
                       "1" => Array ( "TestingLogDevice" => Array ( "Date_time" => "18.11.2017 11:00:31" ) ) 
  )
  ); 
$log_val = array();
foreach ($log_ret_val as $key => $value) {
 foreach ($value as $key1 => $value1) {
    if(isset($log_val[$key1]))
      $log_val[$key1] = array_merge_recursive($log_val[$key1],$value1);
    else
      $log_val[$key1] = array_merge_recursive($value1);
 }
}
print_r($log_val);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [0] => Array ( [TestingLogDevice] => Array ( [Siteid] => Mirpur_CO [Tempin] => 29 [Date_time] => 18.11.2017 11:03:33 ) ) [1] => Array ( [TestingLogDevice] => Array ( [Siteid] => Mirpur_CO [Tempin] => 29 [Date_time] => 18.11.2017 11:00:31 ) ) )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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