merge two arrays and remove duplicates in php code example

Example 1: how to add two array in single array without repetation in php

<?php
	$array1=array("CPU","Mouse","Monitor");
	$array2=array("Key-Board","Monitor","Printer");
	$array = array_unique(array_merge($array1, $array2));
	print_r($array);
?>

Example 2: how to remove duplicate values from a multidimensional array in php

We used this to de-duplicate results from a variety of overlapping queries.

$input = array_map("unserialize", array_unique(array_map("serialize", $input)));

Example 3: php combine 2 arrays keep duplicates

$arrKeys = array('str', 'str', 'otherStr');
$arrVals = array('1.22', '1.99', '5.17');
function foo($key, $val) {
   return array($key=>$val);
}

$arrResult = array_map('foo', $arrKeys, $arrVals);