<?php session_start(); $captcha = substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"),0,4); $_SESSION['captcha'] = $captcha; $gambar = imagecreate(100,100); $wk=imagecolorallocate($gambar,255,222,173); $wt=imagecolorallocate($gambar,0,0,0); $rand = rand(1,60); imagefilledrectangle($gambar,0,0,50,20,$wk); imagestring($gambar,10,$rand,$rand,$captcha,$wt); imagejpeg($gambar); ?>