如图，我在image.func.php中输出getCaptcha();是能够正常显示验证码的但是，我在新建的getCaptcha.php中调用image.func.php再使用getCaptcha()的时候却报错了，这是为什么？？image.func.php中的代码：<?php
function getCaptcha($type = 3,$length = 4,$pixel = 30,$line = 0){
session_start();
//创建底图
$width = 80;
$height = 30;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
//填充画布
//imagefilledrectangle($image, 1, 1, $width-2, $height-2, $white);
imagefill($image, 0, 0, $white);
//获取验证码字段，储存在session中
$type = 3;
$length = 4;
$chars = buildRandomString($type,$length);
$sess_name = "captcha";
$_SESSION[$sess_name] = $chars;
$fontfiles = array("arial.ttf","ariblk.ttf","simkai.ttf","SIMLI.TTF","simsun.ttc","STLITI.TTF");
for ($i=0; $i < $length; $i++) {
$fontsize = mt_rand(12,18);
$angle = mt_rand(-15,15);
$x = ($i*15) + mt_rand(2,5);
$y = mt_rand(15,25);
$color = imagecolorallocate($image, mt_rand(50,150), mt_rand(50,150), mt_rand(50,150));
$font = "../fonts/" . $fontfiles[mt_rand(0,count($fontfiles)-1)];
$text = substr($chars, $i, 1);
imagettftext($image, $fontsize, $angle, $x, $y, $color, $font, $text);
}
//创建干扰元素
if($pixel){
for ($i=0; $i < $pixel; $i++) {
$jamColor = imagecolorallocate($image, mt_rand(100,220), mt_rand(100,220), mt_rand(100,220));
imagesetpixel($image, mt_rand(0,$width-1), mt_rand(0,$height-1), $jamColor);
}
}
if($line){
for ($i=0; $i < $line; $i++) {
$jamColor = imagecolorallocate($image, mt_rand(100,220), mt_rand(100,220), mt_rand(100,220));
imageline($image, mt_rand(0,$width-1), mt_rand(0,$height-1), mt_rand(0,$width-1), mt_rand(0,$height-1), $jamColor);
}
}
ob_clean();
header('content-type:image/png');
imagepng($image);
imagedestroy($image);
}
getCaptcha();getCaptcha.php的代码：<?php
require_once 'lib/image.func.php';
getCaptcha();
3 回答
我是新手_请多指教
TA贡献140条经验 获得超79个赞
imagettftext中的$font参数无效， 也就是$font = "../fonts/" . $fontfiles[mt_rand(0,count($fontfiles)-1)]得到的结果无效。你新文件中有没建个文件夹放相对应字体的文件"arial.ttf","ariblk.ttf","simkai.ttf","SIMLI.TTF","simsun.ttc","STLITI.TTF"这些
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