How to merge two arrays in php using array_merge() function

This article mainly introduces the method of merging two arrays in PHP through the array_merge() function. It analyzes the usage skills of the array_merge() function in PHP to merge arrays. Friends who need it can refer to this article

The example describes how PHP merges two arrays through the array_merge() function. The specific analysis is as follows:

php merges two arrays through the array_merge() function. array_merge() is a php function that is used to merge two or more arrays. The latter array will be appended to the previous array. , and returns the result array. It accepts two or more arrays and returns an array containing all elements.

$first = array("aa", "bb", "cc");
$second = array(11,22,33);
$third = array_merge($first, $second);
 
foreach ( $third as $val ) {
 print "$val<br />";
}

The execution result of the above code is as follows:

The output is an array with ('aa', 'bb', 'cc', 11, 22, 33)

Special tip: If the input array has the same string key, the subsequent value of the key will overwrite the previous one. However, if the array contains numeric keys, subsequent values ​​will not overwrite the original values, but will be appended.

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