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

this one easy

echo strtr(substr(str_shuffle('abcdefghijklmnopqrstuvwxyz0123456789.11.12.13.14.15.16.17.18.19.20'),1,20),array("."=>""));