   #PHP Manual Array Functions array_merge_recursive array_multisort

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                                  array_merge

   (PHP 4 )
   array_merge -- Merge two or more arrays

Description

   array array_merge ( array array1, array array2 [, array ...])

   array_merge() merges the elements of two or more arrays together so
   that the values of one are appended to the end of the previous one. It
   returns the resulting array.

   If the input arrays have the same string keys, then the later value
   for that key will overwrite the previous one. If, however, the arrays
   contain numeric keys, the later value will not overwrite the original
   value, but will be appended.

   Example 1. array_merge() example
   <?php
   $array1 = array("color" => "red", 2, 4);
   $array2 = array("a", "b", "color" => "green", "shape" => "trapezoid",
   4);
   $result = array_merge($array1, $array2);
   print_r($result);
   ?>

   The $result is:
   Array
   (
       [color] => green
       [0] => 2
       [1] => 4
       [2] => a
       [3] => b
       [shape] => trapezoid
       [4] => 4
   )

   Example 2. Simple array_merge() example
   <?php
   $array1 = array();
   $array2 = array(1 => "data");
   $result = array_merge($array1, $array2);
   ?>

   Don't forget that numeric keys will be renumbered!
   Array
   (
       [0] => data
   )

   If you want to completely preserve the arrays and just want to append
   them to each other, use the + operator:
   <?php
   $array1 = array();
   $array2 = array(1 => "data");
   $result = $array1 + $array2;
   ?>

   The numeric key will be preserved and thus the association remains.
   Array
   (
       [1] => data
   )

     Note: Shared keys will be overwritten on a first-come first-served
     basis.

   See also array_merge_recursive() and array_combine().
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