Blogger Information
Blog 33
fans 0
comment 0
visits 24454
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
目录遍历与文件操作 2018年8月28日 23:00
EmonXu的博客
Original
642 people have browsed it

//编程: 目录遍历
//编程: 文件上传与检测


实例

<?php
//
//编程: 目录遍历
//编程: 文件上传与检测

$dir=opendir('../') or die('找不到目录');

while(false!=readdir($dir)){
    if (readdir($dir) != "." && readdir($dir) != "..") {
        print    readdir($dir).'<br>';
}}

closedir($dir);

echo '<hr>';

$dir1 = scandir('../');

print_r($dir1);

echo '<hr>';

foreach($dir1 as $value){
    echo $value,'<br>';
};

echo '<hr>';

echo dirname(__FILE__);
echo '<hr>';
?>

<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="POST" enctype="multipart/form-data">
	<!-- 用隐藏域设置允许上传的文件大小,仅考参考 -->
	<input type="hidden" name="MAX_FILE_SIZE" value="542488">
	<fieldset>
		<legend align="center">文件上传</legend>
		<p><strong>选择文件:</strong><input type="file" name="upload"></p>
	</fieldset>
	<p align="center"><button type="submit" name="submit" >上传</button></p>
</form>

<?php
//检测请求类型是否POST,如果不是应该提示用户类型不对
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    //检测是否有文件被上传
    if (isset($_FILES['upload'])) {
        //设置允许上传的文件类型
        $allow = ['image/jpg','image/jpeg', 'image/png'];
        if (in_array($_FILES['upload']['type'], $allow)) {
            //将文件先移动到临时目录
            if (move_uploaded_file($_FILES['upload']['tmp_name'], "upload/{$_FILES['upload']['name']}")){
                //上传成功
                echo "<script>alert('文件上传成功')</script>";
            }
        }else {
            //提示格式不对
            echo "<script>alert('仅允许上传jpg和png格式的图片')</script>";
        }
    }
    //对上传错误进行处理
    if ($_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>';
        <?php
//
//编程: 目录遍历
//编程: 文件上传与检测

$dir=opendir('../') or die('找不到目录');

while(false!=readdir($dir)){
    if (readdir($dir) != "." && readdir($dir) != "..") {
        print    readdir($dir).'<br>';
}}

closedir($dir);

echo '<hr>';

$dir1 = scandir('../');

print_r($dir1);

echo '<hr>';

foreach($dir1 as $value){
    echo $value,'<br>';
};

echo '<hr>';

echo dirname(__FILE__);
echo '<hr>';
?>

<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="POST" enctype="multipart/form-data">
	<!-- 用隐藏域设置允许上传的文件大小,仅考参考 -->
	<input type="hidden" name="MAX_FILE_SIZE" value="542488">
	<fieldset>
		<legend align="center">文件上传</legend>
		<p><strong>选择文件:</strong><input type="file" name="upload"></p>
	</fieldset>
	<p align="center"><button type="submit" name="submit" >上传</button></p>
</form>

<?php
//检测请求类型是否POST,如果不是应该提示用户类型不对
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    //检测是否有文件被上传
    if (isset($_FILES['upload'])) {
        //设置允许上传的文件类型
        $allow = ['image/jpg','image/jpeg', 'image/png'];
        if (in_array($_FILES['upload']['type'], $allow)) {
            //将文件先移动到临时目录
            if (move_uploaded_file($_FILES['upload']['tmp_name'], "upload/{$_FILES['upload']['name']}")){
                //上传成功
                echo "<script>alert('文件上传成功')</script>";
            }
        }else {
            //提示格式不对
            echo "<script>alert('仅允许上传jpg和png格式的图片')</script>";
        }
    }
    //对上传错误进行处理
    if ($_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>';
        //临时文件删除
        if (file_exists($_FILES['upload']['tmp_name']) && is_file($_FILES['upload']['tmp_name'])) {
            unlink($_FILES['upload']['tmp_name']);
        }
    }
} else {
    echo '1';
}
?>
        if (file_exists($_FILES['upload']['tmp_name']) && is_file($_FILES['upload']['tmp_name'])) {
            unlink($_FILES['upload']['tmp_name']);
        }
    }
} else {
    echo '1';
}
?>

运行实例 »

点击 "运行实例" 按钮查看在线实例


Correction status:Uncorrected

Teacher's comments:
Statement of this Website
The copyright of this blog article belongs to the blogger. Please specify the address when reprinting! If there is any infringement or violation of the law, please contact admin@php.cn Report processing!
All comments Speak rationally on civilized internet, please comply with News Comment Service Agreement
0 comments
Author's latest blog post