Generating a random numbers and letters

Question

Can I ask for a certain code on how to generate a random letters and numbers in one word. I know there\'s a PHP function rand(), but I don\'t know if it\'s also applicable w

Answer 1

What about this simple code. This will generate 10 characters,you can limit characters by modifying the limits (0,10)

$str = substr(md5(time()), 0, 10);
echo $str; //7aca159655