![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Correction status：Uncorrected
Teacher's comments：
Collection
Collection
作业一 : 目录遍历方式
<meta charset="UTF-8">
<?php
echo '<h2>目录遍历方式</h2>','<hr>';
//1.opendir(),打开目录句柄;
$text = opendir('../0828') or die ('打开失败');
//2.readdir(),从目录句柄中读取条目
//用户字符串方式遍历出目录下面的文件
while (false != ($dir = readdir($text)))
{
if ($dir != "." && $dir != '..'){
echo $dir."\n";
}
}
//3.closedir()关闭目录句柄
closedir($text);
echo '<hr>';
//4.scandir()列出指定路径中的文件和目录
//既然scan出的是目录+文件,拿就是一个数组啦,就用数组来遍历
$arr1 = scandir('..\0828');
echo var_export($arr1),'<hr>';
foreach ($arr1 as $dir)
{
if ($dir !="." && $dir !="..")
{
echo $dir."\n";
}
};
?>点击 "运行实例" 按钮查看在线实例
作业二 : 文件上传
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>文件上传</title>
<style>
body form fieldset {
border-color: blue;
}
legend {
text-align: center;
color: red;
}
span {
font-size: 12px;
margin-right: 5px;
}
button {
margin-top: 3px;
margin-left: 85px;
}
</style>
</head>
<body>
<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>"
method="POST" enctype="multipart/form-data">
<input type="hidden" name="MAX_FILE_SIZE" value="542488">
<fieldset>
<legend>文件上传</legend>
<span>选择文件:</span><input type="file" name="upload">
</fieldset>
<button type="submit" name="submit">上传</button>
</form>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if (isset($_FILES['upload'])) {
$allow = ['image/jpe','image/png','image/jpeg'];
if (in_array($_FILES['upload']['type'],$allow)) {
if (move_uploaded_file($_FILES['upload']['tmp_name'],
"upload/{$_FILES['upload']['name']}")){
echo "<script>alert('文件上传成功')</script>";
}
}else {
echo "<script>alert('文件格式不正确')</script>";
}
}
};
if ($_FILES['upload']['error'] > 0 ) {
echo '<p>错误原因是:<strong>';
switch ($_FILES['upload']['error']) {
case 1:
echo '文件超过了php.ini配置中设置的大小';
break;
case 2:
echo '文件超过了表单中常量设置的大小';
break;
case 3:
echo '仅有部分文件被上传';
break;
case 4:
echo '没有文件被上传';
break;
case 6:
echo '没有可用的临时文件夹';
break;
case 7:
echo '磁盘已满,写入失败';
break;
case 8:
echo '上传意外中止';
break;
default:
echo '系统未知错误';
break;
}echo '</strong></p>';
if (file_exists($_FILES['upload']['tmp_name']) && is_file($_FILES['upload']['tmp_name'])) {
unlink($_FILES['upload']['tmp_name']);
}else{
echo '';}
};
?>
</body>
</html>点击 "运行实例" 按钮查看在线实例
总结 : 这次作业有点赶 , 公司事情比较多 , 基本保持了进度把 ...