get unique data from multi-dimensional array list - php

Question

I have 2 records from 2 different query results. I have merged those data. but i have to display unique data depends on vName key.
Here is my result:
{
"val1": "9",
"vName": "abc",
"bname": "",
"cname": "",
"brid": "",
"cmpid": "154",
"logo": "",
"banner": "",
"description": "",
"catids": "",
"type": "company",
"is_nav": "1",
"bigthumb_logo": "",
"compressthumb_logo": "",
"bigthumb_banner": "",
"compressthumb_banner": "",
"sp_ar": "Aperitif"
},
{
"val1": "9",
"vName": "abc",
"bname": "abc",
"cname": "abc",
"brid": "341",
"cmpid": "154",
"logo": "",
"banner": "6c497c72bfec4c694c1cc2c49066e7a1.png",
"description": "http:\/\/www.abc.com\/",
"catids": "9",
"sp_ar": "Aperitif",
"type": "company",
"is_nav": "1",
"bigthumb_logo": "40cbcede9429cdb44895e0e6f4c050d2.png",
"compressthumb_logo": "40cbcede9429cdb44895e0e6f4c050d2.png",
"bigthumb_banner": "6c497c72bfec4c694c1cc2c49066e7a1.png",
"compressthumb_banner": "6c497c72bfec4c694c1cc2c49066e7a1.png"
}
Expected result should be only one of them, compare with vName:
{
"val1": "9",
"vName": "abc",
"bname": "",
"cname": "",
"brid": "",
"cmpid": "154",
"logo": "",
"banner": "",
"description": "",
"catids": "",
"type": "company",
"is_nav": "1",
"bigthumb_logo": "",
"compressthumb_logo": "",
"bigthumb_banner": "",
"compressthumb_banner": "",
"sp_ar": "Aperitif"
}
How can i get the result?

Answer 1

Convert the data into an array where the key is your unique value.
You can do something like:
$data = array('this is your array of data');
$unique = array();
foreach($data as $value) {
if(!array_key_exists($value['vName'], $unique)) {
$unique[$value['vName']] = $value;
}
}
// $unique now contains only arrays with a unique 'vName', using the first it finds in the original list
$new_array = array_values($unique);

Answer 2

Assuming you have a array of associative array stored in $data, the following code will filter it based on vName and store array of associative arrays with unique vName in $filtered_data
$taken = array();
$filtered_data = array_filter($data, function($value) {
global $taken;
if (in_array($value['vName'], $taken)) {
return false;
}
else {
$taken[] = $value['vName'];
return true;
}
});
Here, the variable $taken keeps track of all the vName values that are currently in the $filtered_data. If you find a duplicate vName (that is currently there in $taken), it discards that element.

Answer 3

Try this, it should work for you.
$input = array_map("unserialize", array_unique(array_map("serialize",$input)));