how to merge 2 arrays in php code example

Example 1: php array_merge

<?php
$array1 = array("color" => "red", 2, 4);
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
$result = array_merge($array1, $array2);
print_r($result);
?>
Array
(
    [color] => green
    [0] => 2
    [1] => 4
    [2] => a
    [3] => b
    [shape] => trapezoid
    [4] => 4
)

Example 2: php combine arrays

$output = array_merge($array1, $array2);

Example 3: merge two arrays one as key to another php

// two arrays one become keys and second becomes values
array_combine ( array $keys , array $values );

Example 4: merge array in php

$a1=array("red","green");
$a2=array("blue","green","yellow");
print_r(array_merge($a1,$a2));