PHP验证码图片展示不了
PHP验证码图片显示不了
PHP验证码图片显示不了，显示的是一个红色的叉叉。代码如下：
image.php
<br />
<?php<br />
session_start();<br />
if(isset($_POST['submit'])){<br />
if(trim($_POST["test"])==$_SESSION['validationcode']){<br />
echo '提交成功<br>';<br />
}else{ <br />
echo '<font color="red">验证码输入错误！！</font><br>';<br />
}<br />
}<br />
?><br />
<html><br />
<head><br />
<title>Image</title><br />
<meta http-equiv="content-type" content="text/html;charset=gb2312"><br />
<script><br />
function newgdcode(obj,url) {<br />
//后面传递一个随机参数，否则在IE7和火狐下，不刷新图片<br />
obj.src = url+ '?nowtime=' + new Date().getTime();<br />
}<br />
</script><br />
</head><br />
<body><br />
<img src="/static/imghw/default1.png" data-src="imgcode.php" class="lazy" alt="看不清楚，换一张" style="max-width:90%" onClick="javascript: newgdcode(this,this.src);" /><br />
<form method="POST" action="image.php"><br />
<input type="text" name="test"><br><br />
<input type="submit" name="submit" value="提交"><br />
</form><br />
</body><br />
</html><br />
imgcode.php
<br />
<?php<br />
session_start();<br />
require_once('ValidationCode.php');<br />
<br />
$image = new ValidationCode(60,20,4); <br />
<br />
$image->showImage();<br />
$_SESSION['validationcode'] =$image->getCheckCode(); <br />
?><br />
ValidationCode.php
<br>
<?php <br />
/* 类ValidationCode声明在文件名为Validationcode.php中 */<br>
/* 通过该类的对象可以动态获取验证码图片，和验证码字符串 */<br>
class ValidationCode {<br>
private $width; //验证码图片的宽度<br>
private $height; //验证码图片的高度<br>
private $codeNum; //验证码字符的个数<br>
private $checkCode; //验证码字符<br>
private $image; //验证码画布<br>
<br>
/* 构造方法用来实例化验证码对象，并为一些成员属性初使化 */<br>
/* 参数width: 设置验证码图片的宽度，默认宽度值为60像素 */<br>
/* 参数height: 设置验证码图片的高度，默认高度值为20像素 */<br>
/* 参数codeNum: 设置验证码中字母和数字的个数，默认个数为4个 */<br>
function __construct($width=60, $height=20, $codeNum=4) {<br>
$this->width=$width; //为成员属性width初使化<br>
$this->height=$height; //为成员属性height初使化<br>
$this->codeNum=$codeNum; //为成员属性codeNum初使化 <div class="clear">
</div>
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