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The values in this array are inserted by pulling XML values (using the simplexml_load_file method) and a foreach loop.

$skuArray(2, 4, 3, 7, 7, 4, 1, 7, 9);

After populating the array, I then need to check to see if any duplicate values exist in the array (IE, 7 and 4 in this case). Product->sku contains the skuArray value (from an XML file) in the foreach loop below. The code below isn't working. Any advice? Thanks!

foreach($XMLproducts->product as $Product) {
if (in_array($Product->sku, $skuArray, > 1) {
// execute code
}
}
share|improve this question
    
what do you want to do with the duplicated? remove? store? count? –  Dagon Mar 17 at 23:58
    
possible duplicate of Php check duplicate values in an array –  MarianoCordoba Mar 18 at 0:11

3 Answers 3

up vote 0 down vote

Use array_count_values() to get the number of times a value occurs and then check to see if it is more than one

$skuArray = array(2, 4, 3, 7, 7, 4, 1, 7, 9);
$dupes = array_count_values($skuArray);    
foreach($XMLproducts->product as $Product) {
  if ($dupes[$Product->sku] > 1) {
    // execute code
   }
}
share|improve this answer
    
Thanks! This code should work, but for some reason it isn't. Perhaps because using the simplexml_load_file method may not be pulling a numeric value to test in the if statement (if > 1). –  Dean Olsen Mar 18 at 1:56
up vote 0 down vote

If you need to remove the duplicates then you can use array_unique:

<?php
$input = array(4, 4, 3, 4, 3, 3);
$result = array_unique($input);
// $result = array(4, 3)
?>

If you need only check if there are duplicates then you can do it using array_count_values:

<?php
$input = array(2, 4, 3, 7, 7, 4, 1, 7, 9);
$counts = array_count_values($input);
$duplicates = array();
foreach($counts as $v => $count){
    if($count > 1)
        $duplicates[] = $v;
}

Then you will have an array $duplicates with the duplicated values.

Source: Php check duplicate values in an array

share|improve this answer
    
Thanks! This code should work, but for some reason it isn't. Perhaps because using the simplexml_load_file method may not be pulling a numeric value to test in the if statement (if > 1). –  Dean Olsen Mar 18 at 1:56
    
Are you sure that the format of the array is like array(2, 4, 3, 7, 7, 4, 1, 7, 9)? Here you can see this code working. –  MarianoCordoba Mar 18 at 2:27
up vote 0 down vote

Your code has typo:

if (in_array($Product->sku, $skuArray, > 1) {

in_array expect the first parameter the needle, but you mentioned "Product->sku contains the skuArray value ", anyway, it should be like this:

if (in_array($Product->sku, $skuArray)) {
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