Distinct values using PHP

Question

I want to get only the distinct values from $pjt. I have tried the below code:

$unique_pjtdata = array_unique($pjt);
foreach($unique_pjtdata as $val) {
     echo $val;
}

I am getting an HTTP Error 500 after trying this code.

which type of value in `$pjt` ? Also enable error reporting to know errors. — Devsi Odedra, Dec 11 '19 at 05:10
When you get a 500 error, check the PHP error log for the reason. — Barmar, Dec 11 '19 at 05:11

score 2 · Answer 1 · edited Dec 11 '19 at 09:29

2

Use array_unique().

Example:

$pjt = array(1, 2, 2, 3);
$array = array_unique($pjt);

and if you still get error then you need to enable error reporting to know error.

edited Dec 11 '19 at 09:29

akraf

answered Dec 11 '19 at 05:19

Akash Bhalani

score 0 · Answer 2 · answered Dec 11 '19 at 08:12

You can use array_flip() to switch the keys and values in the array therefore forcing duplicate values to overwrite into a unique set of keys:

$b = ["test1", "test2", "test1", "test3"];
$b = array_flip($b);

print_r( $b );

//output
Array
(
  [test1] => 2
  [test2] => 1
  [test3] => 3
)

You can then extract the keys using array_keys():

$b = array_keys($b);

print_r($b)

// output
Array
(
  [0] => test1
  [1] => test2
  [2] => test3
)

2 Answers2