PHP - how to check matched words from a string?

Question

How to match? Expected valid input:

email-sms-call or sms,email,call or sms email call or smsemailcall

Which only match when there is space in-between

<?php
function contains($needles, $haystack) {
  return count(
          array_intersect(
                  $needles, 
                  explode(" ", preg_replace("/[^A-Za-z0-9' -]/", "", $haystack))
            )
          );
}

$database_column_value = 'email,sms,call';
$find_array = array('sms', 'email');
$found_array_times = contains($find_array, $database_column_value);

if($found_array_times) {
  echo "Found times: {$found_array_times}";
}
else {
  echo "not found";
}


?>

Answer 1

With preg_split function:

function contains($needles, $haystack) {
  if (!$needles || !$haystack) 
      return false;

  $result = array_intersect($needles, preg_split("/[^A-Za-z0-9' -]+/", $haystack));  
  return count($result);
}

$database_column_value = 'email,sms,call';
$find_array = ['sms', 'email', 'phone'];
$found_array_times = contains($find_array, $database_column_value);

if ($found_array_times) {
    echo "Found times: {$found_array_times}";
} else {
    echo "not found";
}

The output:

Found times: 2