Merge an array with an existing array php -


i have 2 array both containing data. want able add them information second array joins first array. array_merge doing adds second array end of first one.

array 1

[1] => array         (             [0] => 2017-07-13 00:00:00             [1] => foo             [2] => bar             [3] => 16.11             [4] => 80.56             [5] => 96.67         ) [2] => array         (             [0] => 2017-07-13 00:00:00             [1] => foo             [2] => bar             [3] => 1.23             [4] => 50.69             [5] => 14.24         )

array 2

[1] => array         (             [0] => time             [1] => lorem             [2] => ipsum         )  [2] => array         (             [0] => time             [1] =>             [2] => text          )

how can merge 2 arrays output becomes below?

array 3

[1] => array         (             [0] => 2017-07-13 00:00:00             [1] => foo             [2] => bar             [3] => 16.11             [4] => 80.56             [5] => 96.67             [6] => time             [7] => lorem             [8] => ipsum         ) [2] => array         (             [0] => 2017-07-13 00:00:00             [1] => foo             [2] => bar             [3] => 1.23             [4] => 50.69             [5] => 14.24             [6] => time             [7] =>             [8] => text         )

what happening

[1] => array         (             [0] => 2017-07-14 00:00:00             [1] => foo             [2] => bar             [3] => 16.11             [4] => 80.56             [5] => 96.67         )      [2] => array         (             [0] => 2017-07-14 00:00:00             [1] => foo             [2] => bar             [3] => 1.23             [4] => 50.69             [5] => 14.24         )      [3] => array         (             [0] => time             [1] => lorem             [2] => ipsum         )      [4] => array         (             [0] => time             [1] =>             [2] => text         )

i have tried array_merge( $array1 , $array2 ); adds second array end of first one.

any ideas?

this looks pretty forward me, array_merge() elements of 2 arrays: 

<?php $a = [     1 => [         '2017-07-13 00:00:00',         'foo',         'bar',         16.11,         80.56,         96.67     ],     2 => [         '2017-07-13 00:00:00',         'foo',         'bar',         1.23,         50.69,         14.24     ] ]; $b = [     1 => [         'time',         'lorem',         'ipsum'     ],     2 => [         'time',         'some',         'text'     ] ];  array_walk($b, function($values, $key) use (&$a) {     $a[$key] = array_merge($a[$key], $values); }); print_r($a);

the output of is: 

array (     [1] => array         (             [0] => 2017-07-13 00:00:00             [1] => foo             [2] => bar             [3] => 16.11             [4] => 80.56             [5] => 96.67             [6] => time             [7] => lorem             [8] => ipsum         )      [2] => array         (             [0] => 2017-07-13 00:00:00             [1] => foo             [2] => bar             [3] => 1.23             [4] => 50.69             [5] => 14.24             [6] => time             [7] =>             [8] => text         ) )

update:

in comment below ask if approach can generalized merge arbitrary number of arrays. sure possible, add iteration layer: 

<?php $target = [     1 => ['2017-07-13 00:00:00', 'foo', 'bar', 16.11, 80.56, 96.67],     2 => ['2017-07-13 00:00:00', 'foo', 'bar', 1.23, 50.69, 14.24] ]; $sources = [     'b' => [         1 => ['time', 'lorem', 'ipsum'],         2 => ['time', 'some', 'text']     ],     'c' => [         1 => ['c1a', 'c1b'],         2 => ['c2a', 'c2b', 'c2b']     ] ];  array_walk($sources, function($source) use (&$target) {     array_walk($source, function($values, $key) use (&$target) {         $target[$key] = array_merge($target[$key], $values);     }); }); print_r($target);

this variant produces output: 

array (     [1] => array         (             [0] => 2017-07-13 00:00:00             [1] => foo             [2] => bar             [3] => 16.11             [4] => 80.56             [5] => 96.67             [6] => time             [7] => lorem             [8] => ipsum             [9] => c1a             [10] => c1b         )      [2] => array         (             [0] => 2017-07-13 00:00:00             [1] => foo             [2] => bar             [3] => 1.23             [4] => 50.69             [5] => 14.24             [6] => time             [7] =>             [8] => text             [9] => c2a             [10] => c2b             [11] => c2b         )  )

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