是要求验证码,,,,而不是简单的返回几个数字或字母,,去看看验证码制作的课程吧
先保存函数,再在函数头写/**+enter就行了
$text=implode(range(0,0),range("a","z"),range("A","Z"));
$text=str_shuffle($text);
$text=substr( $text,0,4);----------------------------
$rand_color=imagecolorallocate($image,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));
$xuehua=imagesetpixel($image, mt_rand(0, $width), mt_rand(0,$height), $color);