How to remove duplicate values from an array in PHP

Question

How can I remove duplicate values from an array in PHP?

Answer 1

An alternative for array_unique() function..

Using Brute force algorithm

//[1] This our array with duplicated items

$matches = ["jorge","melvin","chelsy","melvin","jorge","smith"];

//[2] Container for the new array without any duplicated items

$arr = [];

//[3] get the length of the duplicated array and set it to the var len to be use for for loop

$len = count($matches);

//[4] If matches array key($i) current loop Iteration is not available in
//[4] the array $arr then push the current iteration key value of the matches[$i]
//[4] to the array arr.

for($i=0;$i

if(array_search($matches[$i], $arr) === false){

    array_push($arr,$matches[$i]);
}
}

//print the array $arr.
print_r($arr);

//Result: Array
(
[0] => jorge
[1] => melvin
[2] => chelsy
[3] => smith
)