/**

* @param number $type 默认是数字

* @param number $length 默认4位长度

* @param string $codeName verifyCode

* @param number $pixel 100个点

* @param number $line 0个直线

* @param number $arc 0个弧

* @param number $width 画布宽度

* @param number $height 画布高度

* @param unknown $fontfiles 字体库

* @return number

*/

function getVerify($type = 1, $length = 4, $width = 200, $height = 40,$codeName = 'verifyCode', $pixel = 100, $line = 0, $arc = 0, $fontfiles = array("fonts/SIMYOU.TTF","fonts/STXINGKA.TTF")) {

$image = imagecreatetruecolor ( $width, $height );

function randColor($image) {

return imagecolorallocate ( $image, mt_rand ( 0, 255 ), mt_rand ( 0, 255 ), mt_rand ( 0, 255 ) );

}

$white = imagecolorallocate ( $image, 255, 255, 255 );

imagefilledrectangle ( $image, 0, 0, $width, $height, $white );

switch ($type) {

case 1 :

// 数字

$string = join ( '', array_rand ( range ( 0, 9 ), $length ) );

break;

case 2 :

// 字母

$string = join ( '', array_rand ( array_flip ( array_merge ( range ( 'a', 'z' ), range ( 'A', 'Z' ) ) ), $length ) );

break;

case 3 :

// 数字+字母

$string = join ( '', array_rand ( array_flip ( array_merge ( range ( 'a', 'z' ), range ( 'A', 'Z' ), range ( 0, 9 ) ) ), $length ) );

break;

case 4 :

// 汉字

$str = "时,间,跨,度,发,牢,骚,京,东,方,科,技,实,力,可,见,味,儿,为,了,抗,日,将,领,万,科,进,入,了,口,味,加,入,了,速,递,否,石,佛,思,考,的,房,间,里,看,似,简,单,风,口,浪,尖,遛,弯,儿,破,我,诶,人,品";

$arr = explode ( ',', $str );

$string = join ( '', array_rand ( array_flip ( $arr ), $length ) );

break;

}

// 将验证码存储到SESSION中

session_start ();

$_SESSION [$codeName] = $string;

for($i = 0; $i < $length; $i ++) {

$fontfile = $fontfiles [array_rand ( $fontfiles )];

//mb_string库

$char = mb_substr ( $string, $i, 1, 'utf-8' );

imagettftext ( $image, mt_rand ( 14, 24 ), mt_rand ( - 30, 30 ), 20+ $i*50, mt_rand ( $height -20, $height - 10 ), randColor ( $image ), $fontfile, $char );

}

// 检测是否设置干扰元素

if ($pixel) {

for($i = 1; $i <= $pixel; $i ++) {

imagesetpixel ( $image, mt_rand ( 0, $width ), mt_rand ( 0, $height ), randColor ( $image ) );

}

}

if ($line) {

for($i = 1; $i <= $line; $i ++) {

imageline ( $image, mt_rand ( 0, $width ), mt_rand ( 0, $height ), randColor ( $image ) );

}

}

if ($arc) {

for($i = 1; $i <= $arc; $i ++) {

imagearc ( $image, mt_rand ( 0, $width / 2 ), mt_rand ( 0, $height / 2 ), mt_rand ( 0, $width ), mt_rand ( 0, $height ), mt_rand ( 0, 360 ), mt_rand ( 0, 360 ), randColor ( $image ) );

}

}

header ( 'content-type:image/png' );

imagepng ( $image );

imagedestroy ( $image );

}

?>

一键复制

编辑

Web IDE

原始数据

按行查看

历史