PHP 基本上搞定了，还差最后一章 PHP 图形处理。
这节也通过一堆代码来写吧，很好理解的。
首先是 web 页面，file.html 页面用来测试收集数据和上传文件。
<html>
<head>
<meta charset="utf-8">
<title>测试 PHP 与 Web 交互与文件 / 目录操作</title>
</head>
<body>
<center>
<h2>测试 PHP 与 Web 交互与文件 / 目录操作</h2>
<form action="file.php" method="post">
<table>
<tr bgcolor="#3399ff">
<td>用户名:</td><td><input type="text" name="name" size="20" maxLength="20" /></td>
</tr>
<tr bgcolor="#CCCCCC">
<td>性别:</td><td><center><input type="radio" name="sex" value="1" checked/>男 <input type="radio" name="sex" value="2" /> 女</center></td>
</tr>
<tr bgcolor="#4ADDFF">
<td>擅长:</td>
<td>
<center>
<select name="fav" >
<option value="1">C/C++</option>
<option value="2">Java</option>
<option value="3">PHP</option>
<option value="4">Python</option>
<option value="5">HTML5/CSS</option>
</select>
</center>
</td>
</tr>
<tr bgcolor="#CAFF0D">
<td>密码:</td><td><input type="password" name="passwd" size="20" maxLength="20"/></td>
</tr>
<tr bgcolor="#CAFF0D">
<td>确认:</td><td><input type="password" name="repasswd" size="20" maxLength="20"/></td>
</tr>
<tr bgcolor="#E8950C">
<td colspan=2><center><input type="reset" value="重置"/>
<input type="submit" value="提交"/></center></td>
</tr>
</table>
</form>
<h2>测试文件上传</h2>
<form method="post" action="upload.php" enctype="multipart/form-data">
<input type="file" name="upload"/>
<input type="submit" value="上传"/>
</form>
</body>
</html>其次是 file.php，处理表单接收的数据，并写入文件 file.data，然后读取。
<meta charset="utf-8">
<?php
echo "<h2>测试 PHP 与 Web 交互与文件 / 目录操作 </h2>";
$name = trim($_POST['name']);
$sex = trim($_POST['sex']);
$fav = trim($_POST['fav']);
$fav = trim($_POST['fav']);
$passwd = trim($_POST['passwd']);
$repasswd = trim($_POST['repasswd']);
if($passwd != $repasswd) {
echo "<script>alert(\" 密码不一致!\");history.go(-1);</script>";
exit();
}
@$sav = fopen("./file.data", "a+b");
fwrite($sav, date("Y-M-D H:i:s")."\t$name\t$sex\t$fav\t$passwd\n");
rewind($sav);
echo "信息已提交!<br>";
while(!feof($sav))
echo fgets($sav)."<br>";
fclose($sav);
?>最后是上传的 upload.php，用来处理上传的文件，和操作目录。
<meta charset="utf-8">
<?php
define("UPLOAD", "./uploads/");
echo "<h2>测试文件上传 </h2>";
echo "上传文件名:".$_FILES['upload']['name']."<br>";
echo "上传文件类型:".$_FILES['upload']['type']."<br>";
echo "上传文件大小:".$_FILES['upload']['size']/1024;
echo "kb<br>";
if(!file_exists(UPLOAD))
mkdir(UPLOAD);
move_uploaded_file($_FILES['upload']['tmp_name'], iconv("UTF-8", "GB2312",UPLOAD.$_FILES['upload']['name']));
echo "当前目录:".getcwd()."<br>";
echo "目录文件列表："."<br>";
print_r(scandir(UPLOAD));
echo "<br>===========================<br>";
$d = dir(UPLOAD);
while($f = $d->read())
echo iconv("GB2312", "UTF-8",$f)."<br>";
$d->close();
echo "<br>===========================<br>";
$d = opendir(UPLOAD);
while(false !== ($f = readdir($d)))
echo iconv("GB2312", "UTF-8",$f)."<br>";
closedir($d);
?>最终效果图：
文件上传：
