<?php
// online code for creating alphanumeric in php
// this will generate 6 charactor, you can create as many just change the 6 from code
$pass = substr(str_shuffle("0123456789abcdefghijklmnopqrstvwxyz"), 0, 6);
echo $pass;
//output : 17w2y8
?>function generateRandomString($length = 25) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
//usage
$myRandomString = generateRandomString(5);mysql> update DemoTable
set Value=LPAD(FLOOR(RAND() * 999999.99), 6, '0');
Query OK, 6 rows affected (0.15 sec)
Rows matched: 6 Changed: 6 Warnings: 0SELECT str_rand(6, '23456789abcdefghijkmnpqrstuvwxyz');