Question

How to merge 4 arrays in 1 array in PHP

Answer 1

$arr_1 = array("aaa", "bbb");
$arr_2 = array("ccc", "ddd");
$arr_3 = array("eee", "fff");
$arr_4 = array("ggg", "hhh");
$m = array_merge($arr_1, $arr_2, $arr_3, $arr_4);
print_r($m); 
 
/*
run:
  
Array ([0] => aaa [1] => bbb [2] => ccc [3] => ddd [4] => eee [5] => fff [6] => ggg [7] => hhh) 
  
*/

 

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Answer 2

$arr_1 = array("aaa", "bbb");
$arr_2 = array("ccc", "ddd");
$arr_3 = array("eee", "fff");
$arr_4 = array("ggg", "hhh");
$m = array_merge_recursive($arr_1, $arr_2, $arr_3, $arr_4);
echo "<pre>";
print_r($m); 
echo "</pre>";
 
/*
run:
  
Array
(
    [0] => aaa
    [1] => bbb
    [2] => ccc
    [3] => ddd
    [4] => eee
    [5] => fff
    [6] => ggg
    [7] => hhh
)
  
*/

 

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Answer 3

$arr_1 = array("aaa", "bbb", 1);
$arr_2 = array("name" => "dan", "profession" => "programmer", 2);
$arr_3 = array("a", "b", "c", "d");
$arr_4 = array(10, 20 , 30);
$m = array_merge($arr_1, $arr_2, $arr_3, $arr_4);
echo "<pre>";
print_r($m); 
echo "</pre>";
 
/*
run:
  
Array
(
    [0] => aaa
    [1] => bbb
    [2] => 1
    [name] => dan
    [profession] => programmer
    [3] => 2
    [4] => a
    [5] => b
    [6] => c
    [7] => d
    [8] => 10
    [9] => 20
    [10] => 30
)
  
*/

 

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