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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