Function to generate Random Key

HERE is a function to generate a random key in PHP

$Length = number of digit of which you need to generate random key


function GenerateRandomKey($Length){
  $random_chars="";
  $characters = array(
"A","B","C","D","E","F","G","H","J","K","L","M",
"N","P","Q","R","S","T","U","V","W","X","Y","Z",
"1","2","3","4","5","6","7","8","9");

//make an "empty container" or array for our keys
$keys = array();

//first count of $keys is empty so "1", remaining count is 1-6 = total 7 times
while(count($keys) < $Length) {
    //"0" because we use this to FIND ARRAY KEYS which has a 0 value
    //"-1" because were only concerned of number of keys which is 32 not 33
    //count($characters) = 33
    $x = mt_rand(0, count($characters)-1);
    if(!in_array($x, $keys)) {
       $keys[] = $x;
    }
}

foreach($keys as $key){
   $random_chars .= $characters[$key];
}
return $random_chars;



 }


Just pass the length parameter and will get random key generated

Example

echo $keygen = GenerateRandomKey(13);

OUTPUT

Every time you call the function and it would return a random key

KFZBHR18TN3X4
Y38JGTDVHCP9L
9DMNF6ACE37XQ
MUGSFC4RT5BKH

You can make the key more complex by adding character and digits  to $character array

Thanks

Cheers