remove duplicates in associative array php code example

Example 1: php remove duplicates from array

<?php
$fruits_list = array('Orange',  'Apple', ' Banana', 'Cherry', ' Banana');
$result = array_unique($fruits_list);
print_r($result);
?>
  
Output:

Array ( [0] => Orange [1] => Apple [2] => Banana [3] => Cherry )

Example 2: filter duplicate associative array by value check in php

<?php
function unique_key($array,$keyname){

 $new_array = array();
 foreach($array as $key=>$value){

   if(!isset($new_array[$value[$keyname]])){
     $new_array[$value[$keyname]] = $value;
   }

 }
 $new_array = array_values($new_array);
 return $new_array;
}

// Array
$student_arr[] = array("name" => "Yogesh Singh","age"=>24);
$student_arr[] = array("name" => "Sonarika Bhadoria","age"=>24);
$student_arr[] = array("name" => "Anil Singh","age" => 23);
$student_arr[] = array("name" => "Mayank Patidar","age" => 25);
$student_arr[] = array("name" => "Anil Singh","age" => 19);

// Remove duplicate value according to 'name'
$student_unique_arr = unique_key($student_arr,'name');

echo "<pre>";
print_r($student_arr);
echo "</pre>";

echo "<b>Array after remove duplicate key</b>";
echo "<pre>";
print_r($student_unique_arr);
echo "</pre>";