To generate Unique characters, Coupon code that can be used for activities like mobile pin recharge cards, Code for registration on a website, special code to grant customers special offers and lots more, then this writeup will guide you.

How to Generate Unique Characters

1. Generate Random characters like numbers, letters, special characters, or combination of all of this.
2. Create a database table then add a column that will store unique character of any length you desire.

This is the two PHP code that will get things done.


1. PHP code to generate the codes

function generateCodes(){
$vv = "WRITE YOUR VARIOUS CHARACTERS HERE";
$valz = explode(' ', $vv);
$sizeOfcontent = sizeof($valz);

for($x=0; $x<19; $x++){
$returnV = rand(0, $sizeOfcontent-1);
if($valz[$returnV] != " "){
$newArray[$x] = $valz[$returnV];
}
if(($x+1)%5==0)$newArray[$x] = " ";//$valz[$returnV];

}
return implode($newArray);
}


2. Storing the Unique code to the Database.

function storeOnDB($db){
$storeResult = array();

for($x=0; $x<20000; $x++){
$pin = theNumber();
$storeResult[] = '("'.$pin.'")';
}

$state = $db->query('insert into table(pin_ttt) values'. implode(',', $storeResult));
if($state) echo 'success';
else echo 'error: '.$db->error;
}