For search, the object or a row from a two-dimensional array most people use the for and foreach loop that consumes too much time to search if the record is large. It increases the iteration of a loop. That can consume too much memory and also raised the performance issue for the software if that code is accessible by multiple users through direct access or by API.
$users = [ [ "user_id"=>1, "first_name"=>"Deepak", "last_name"=>"sharma" ],[ "user_id"=>2, "first_name"=>"Tarun", "last_name"=>"sharma" ],[ "user_id"=>3, "first_name"=>"vikas", "last_name"=>"sharma" ],[ "user_id"=>4, "first_name"=>"Krishna", "last_name"=>"sharma" ] ];
Now in the above array we want the user name for the user which have the user id 3
Worst approach
foreach($users as $row) { if($row['user_id']==3){ $userName = $row['first_name']; } }
OR
for($i = 0;$i < count($users);$i++) { if($users[$i]['user_id']==3){ $userName = $users[$i]['first_name']; } }
Best approach
$key = array_search(3, array_column($users, 'user_id')); $userName = $users[$key]['first_name'];
In this approach we are using the two array function first array_column and second array_search.
Array_column made an one dimensional array with that particular key. e.g user_id
Below given array will be return from the array column function.
$users =[ [0]=>1, [1]=>2, [2]=>3, [3]=>4 ];
Now array_search function will return you the key where value 3 is exist.
$key = array_search('3',$users);Let suppose it return you the 2 because value 3 exist on the key 2.
$value = $users[$key]['first_name'];Then you can easily access that value from the array
