Count duplicate values in array php-CodePudding

Firstly thanks in advance :)

I write a code like this way:

$data = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,5];

$result = max(array_count_values($data));

if($result > 1) {
  echo 'Duplicate items were found!';
}else{
  echo 'No Duplicate';
}

This code works perfectly but when I get data from the server-side like :

$getValue = '1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,5';
$data = [$getValue];

$result = max(array_count_values($data));

if($result > 1) {
  echo 'Duplicate items were found!';
}else{
  echo 'No Duplicate';
}

code not working, anyone please help me here to sort out.

CodePudding user response：

Try this,

$getValue = '1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,5';
$data = [$getValue];
$data = explode(',', $data[0]);
$result = max(array_count_values($data));

if($result > 1) {
  echo 'Duplicate items were found!';
}else{
  echo 'No Duplicate';
}

CodePudding user response：

The variable $getValue is a string, and using $data = [$getValue]; will create an array with that single entry and using max will return 1 yielding "No Duplicate"

What you could do is check if the variable $getValue is a string, use explode and remove the empty entries.

For this you could use for example array_filter and you can see the documentation what this will remove when using it without a callback.

$getValue = '1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,5';
if (is_string($getValue)) {
    $result = max(array_count_values(array_filter(explode(',', $getValue))));
}
if ($result > 1) {
    echo 'Duplicate items were found!';
} else {
    echo 'No Duplicate';
}

Output

Duplicate items were found!

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