PHP Implementation method of merging 2 numeric key array values

This article mainly introduces the implementation of PHP to merge 2 numeric key array value method, involving PHP for array traversal, judgment, conversion and other related operations skills, the need for friends can refer to the following

In this paper, we describe the simple implementation of PHP to merge 2 numeric key array value method. Share to everyone for your reference, as follows:

First, we need to understand a basic point: PHP combined array + and Array_merge analysis of the difference

<?php/** * PHP merges 2 numeric key array values * * @param array $arr 1 * @param array $arr 2 * @return array */function new_array_merge ($arr 1, $arr 2) {  if (!is_array ($arr 1) | |!is_array ($arr 2))  {    return array ();  }  $arr = Array_flip ($arr 1) + Array_flip ($arr 2);  Return Array_keys ($arr);} $arr 1 = array (' AA ', ' BB ', ' cc '), $arr 2 = Array (' Aa2 ', ' BB ', ' cc2 '); $arr = New_array_merge ($arr 1, $arr 2);p Rint_r ($arr);

Output:

Array (  [0] = AA  [1] = BB  [2] = = CC  [3] = Aa2  [4] = CC2)

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