{"id":1124,"date":"2021-04-14T01:09:50","date_gmt":"2021-04-14T01:09:50","guid":{"rendered":"https:\/\/phptutorial.net\/?page_id=1124"},"modified":"2025-04-06T03:52:17","modified_gmt":"2025-04-06T03:52:17","slug":"php-array_merge","status":"publish","type":"page","link":"https:\/\/www.phptutorial.net\/php-tutorial\/php-array_merge\/","title":{"rendered":"PHP array_merge"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you will learn how to use the PHP array_merge()<\/code> function to merge one or more arrays into one.<\/p>\n\n\n\n

Introduction to the PHP array_merge() function #<\/a><\/h2>\n\n\n\n

To merge one or more arrays into an array<\/a>, you use the array_merge()<\/code> function:<\/p>\n\n\n

array_merge ( array<\/span> ...$arrays ) : array<\/span><\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
The array_merge()<\/code> function accepts one or more arrays and returns a new array containing elements from the input arrays.<\/p>\n\n\n\n
The array_merge()<\/code> function appends the elements of the next array to the last element of the previous one.<\/p>\n\n\n\n
When the elements in the input arrays have the string keys, the later value for that key will overwrite the previous one.<\/p>\n\n\n\n
However, if the array_merge()<\/code> function will not overwrite the values with the same numeric keys. Instead, it renumbers the numeric keys starting from zero in the result array.<\/p>\n\n\n\n
Starting from PHP 7.4.0, you can call the array_merge()<\/code> function without any arguments. In this case, the function will return an empty array.<\/p>\n\n\n\n
PHP array_merge() function example #<\/a><\/h2>\n\n\n\n
The following example uses the array_merge()<\/code> function to merge two arrays into one:<\/p>\n\n\n
<?php<\/span>\n\n$server_side = ['PHP'<\/span>];\n\n$client_side = ['JavaScript'<\/span>, 'CSS'<\/span>, 'HTML'<\/span>];\n\n$full_stack = array_merge($server_side, $client_side);\n\nprint_r($full_stack);<\/span><\/code><\/span>Code language:<\/span> HTML, XML<\/span> (<\/span>xml<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
Array<\/span>\n(\n    [0<\/span>] => PHP\n    [1<\/span>] => JavaScript\n    [2<\/span>] => CSS\n    [3<\/span>] => HTML\n)<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
How it works.<\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n