验证码的代码在哪复制运行我打了代码大部分但是在最后也许是没打完运训出错未定义的方法
<?php
check_codo();
//$img = imagecreate($width,$height);//创建画布并且传入两个变量宽高
function check_codo($width = 100,$height = 50,$num = 4, $type = 'jpeg'){
$img = imagecreate($width, $height);
$string = '';
for ($i = 0;$i < $num;$i++) {
$rand = mt_rand(0,2);
switch ($rand) {
case 0:
$ascll = mt_rand(48,57);//0-9
break;
case 1:
$ascll = mt_rand(65,90);//A-Z
break;
case 2:
$ascll = mt_rand(97,122);//a-z
break;
}
$string = sprintf('$c',$ascll);
}
//背景颜色
imagefilledrectangle($img, 0, 0, $width, $height, randBg($img));
//干扰元素
for ($i=0; $i < 50; $i++) {
imagesetpixel($img, mt_rand(0,$width),mt_rand(0,$height),randPix($img));
# code...
}
//写字
for ($i=0; $i < $num; $i++) {
$x = floor($width / $num) * $i+2;
}
}
?>
