php remove duplicates from multidimensional array

1<?php
2$fruits_list = array('Orange',  'Apple', ' Banana', 'Cherry', ' Banana');
3$result = array_unique($fruits_list);
4print_r($result);
5?>
6  
7Output:
8
9Array ( [0] => Orange [1] => Apple [2] => Banana [3] => Cherry ) 

1<?php
2    function super_unique($array,$key)
3    {
4       $temp_array = [];
5       foreach ($array as &$v) {
6           if (!isset($temp_array[$v[$key]]))
7           $temp_array[$v[$key]] =& $v;
8       }
9       $array = array_values($temp_array);
10       return $array;
11
12    }
13
14
15$arr="";
16$arr[0]['id']=0;
17$arr[0]['titel']="ABC";
18$arr[1]['id']=1;
19$arr[1]['titel']="DEF";
20$arr[2]['id']=2;
21$arr[2]['titel']="ABC";
22$arr[3]['id']=3;
23$arr[3]['titel']="XYZ";
24
25echo "<pre>";
26print_r($arr);
27echo "unique*********************<br/>";
28print_r(super_unique($arr,'titel'));
29
30?>
31

1<?php
2$list_programming_language = array('C#',  'C++', 'PHP', 'C#', 'PHP');
3$result = array_unique($list_programming_language);
4print_r($result);
5?>
6  
7// ==> 'C#',  'C++', 'PHP'

1<?php
2$a=array("a"=>"red","b"=>"green","c"=>"red");
3print_r(array_unique($a));
4?>
5Output : Array ( [a] => red [b] => green )
6
7Example 2:
8
9
10$array = array(1, 2, 2, 3);
11$array = array_unique($array); 
12Output : Array is now (1, 2, 3)
13  
14  

1array_unique($array, SORT_REGULAR);
2

1We used this to de-duplicate results from a variety of overlapping queries.
2
3$input = array_map("unserialize", array_unique(array_map("serialize", $input)));
4