验证码不显示 各种方法都试过了

Question

百度了 好多东西 都试过了还是不显示   求助

Answer 1

CImage.class
<?php
/*
 * $img=new CImage(72,22,15);
 * $img->printimg('png');
 */
@session_start();
class CImage{
public $width;
public $heigth;
public $sessionName='_jms_vcode';
public $type='png';
public $charlen=4;
public $fontSize=15;
public $ttf;

private $img;
private $chars="0123456789";

function __construct($width=48,$heigth=18,$fontSize=15){
$this->width=$width;
$this->heigth=$heigth;
$this->fontSize=$fontSize;
$this->img=imagecreate($this->width,$this->heigth);
$this->ttf=dirname(__FILE__).'/fonts/F2FOCRBczykLTStd-Regular.otf';
imagefill($this->img,0,0,imagecolorallocate($this->img,230,235,255)); 
}

function writeChar($code){
$charlen=strlen($this->chars);
$fontLeft=-12;
for($i=0;$i<strlen($code);$i++){
$fontSize=mt_rand(-1,1)+$this->fontSize;
$fontLeft+=$fontSize+mt_rand(0,2);
$fontTop=$this->heigth-mt_rand(1,5);
$col=imagecolorallocate($this->img,rand(0,150),rand(0,150),rand(0,150));
imagettftext($this->img, $fontSize, mt_rand(-20,20), $fontLeft, $fontTop, $col, $this->ttf, $code{$i});
}
}

function writeArc($i){
while($i--){
ImageArc($this->img,rand(1,$this->width),rand(10,$this->heigth),rand(20,$this->width),rand(1,$this->heigth),rand(1,360),300, imagecolorallocate($this->img,rand(0,120),rand(0,120),rand(0,120)));
}
}

function writePix($i){
while($i--){
imagesetpixel($this->img,rand(0,$this->width),rand(0,$this->heigth),imagecolorallocate($this->img,rand(0,200),rand(0,200),rand(0,200)));
}
}

function printimg($type){
header("content-type:image/$type");
$len=strlen($this->chars);
$code='';
for($i=0;$i<$this->charlen;$i++) $code.=$this->chars{mt_rand(0,$len-1)};
$_SESSION[$this->sessionName]=strtolower($code);
$this->writeChar($code);
//$this->writeArc(3);
$this->writePix(20);
$fun='image'.$type;
$fun($this->img);
}

}

Answer 2

user.class.php
/**
 * 验证码产生器
 */
public final function vcode($rmt=null){
$lib_path=$_SERVER['DOCUMENT_ROOT'].'/lib/';
include_once $lib_path .'classes/CImage.class';
$width=72;
$height=24;
$img=new CImage($width, $height);
$img->sessionName=$this->vcodeSessionName;
$img->printimg('png');
}

Answer 3

function.js
//{{{ 登录相关
function userBeforLogin(){

}function userLogin(err, data){
if(err){
alert(err);
$('input[name=vcode]')
.val('')
.closest('div')
.find('.yzmNum img')
.click();

}else{
location='/';
}
}//}}}

Answer 4

文件编码UTF-8无bom？

Answer 5

header()之前是否有输出

Answer 6

打开php.ini错误提示

Answer 7

确定是否加载图片的GD库，在php的配置文件中。