Merge two arrays into one array in PHP

Description

The following code shows how to merge two arrays into one array.

Example

// w w  w .  ja v a 2  s.c  o m
<?php
    $a1=array("red","green");
    $a2=array("blue","yellow");
    print_r(array_merge($a1,$a2));
?>

The code above generates the following result.