从php中的多维数组中删除重复值

Question

I have csv file, i am reading data from it, i have join all which are randomly matching their rows like brands, customer and soon..,

Here i want to remove all duplicate from multi dimensional array which already in array

Here you can see how all duplicate values are appending to array in this image

Here is my php code

$csv = array_map('str_getcsv', file('test.csv'));
//echo '<pre>';
//print_r($csv);
//exit;
$brand =[];
foreach ($csv as $key => $value) {
    if(!(in_array($value[14], $brand))){
    $brand[$value[21]]['brands'][]=$value[14];    
    $brand[$value[21]]['products'][]=$value[1];    
    }   
}
echo '<pre>';
print_r($brand);

Thanks and welcome for all suggestions

Answer 1

You need to modify where you are looking in the in_array. You want to do this for both I'm sure, as well as check that it is set first:

foreach ($csv as $key => $value) {
    if(!isset($brand[$value[21]]['brands']) ||
       !in_array($value[14], $brand[$value[21]]['brands'])){
            $brand[$value[21]]['brands'][]=$value[14];
    }
    if(!isset($brand[$value[21]]['products']) ||
       !in_array($value[14], $brand[$value[21]]['products'])){
            $brand[$value[21]]['products'][]=$value[1];
    }            
}