Question

How to find the element in array that appears once in PHP

Answer 1

$array = [7, 2, 2, 2, 2, 2, 4, 5, 3, 4, 5, 7, 5, 4];

$array_count_values = array_count_values($array);

print_r($array_count_values);

foreach($array_count_values as $key=>$val){ 
   if ($val == 1) { 
     echo $key; 
   }
}





/*
run:
      
Array
(
    [7] => 2
    [2] => 5
    [4] => 3
    [5] => 3
    [3] => 1
)
3
      
*/

 

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