<form name="form1" method="post" action="info.php"><textarea name="a" cols="20" rows="3" wrap="soft">我使用的是软回车，我输出后不换行！</textarea><br><textarea name="b" cols="20" rows="3" wrap="hard">我使用的是硬回车，我输出后自动换行！</textarea><br>sex:<input name="sex" type="radio" value="http://www.mamicode.com/1" checked> 男<input name="sex" type="radio" value="http://www.mamicode.com/0">女<br><table width="445" cellpadding="0" cellspacing="0">    <tr>        <td width="443" height="41" align="center" valign="top">            你喜欢的图书类型：            <input type="checkbox" name="mrbook[]" value="http://www.mamicode.com/入门类">入门类            <input type="checkbox" name="mrbook[]" value="http://www.mamicode.com/安全类">安全类            <input type="checkbox" name="mrbook[]" value="http://www.mamicode.com/专业类">专业类        </td>    </tr></table><br><input type="file" name="file" size="15"><br><input type="submit" name="Submit" value="http://www.mamicode.com/提交"></form><a href="http://www.mamicode.com/info.php?id=<?php echo urlencode("编程词典");?>">PHP编程词典</a><?php echo "您提交的查询字符串内容是：".urldecode($_GET[id]); ?><?php    echo nl2br($_POST[a])."<br>";    echo nl2br($_POST[b]);    echo "<br>";    if (($_POST[sex] != null)){        echo "你选择的性别为:".$_POST["sex"];    }    if (($_POST[mrbook] != null)){        echo "你选择的结果是：";        for ($i=0; $i<count($_POST[mrbook]); $i++)            echo $_POST[mrbook][$i]."&nbsp;&nbsp;";        }    echo "<br>";    if (($_POST[file] != null)){        $path = ‘./‘;        move_uploaded_file($_FILES[file],$path);        echo "你上传的文件为:".$_POST["file"];    }?>