导读：本文实例讲述了PHP文件上传类。分享给大家供大家参考，具体如下：这里演示了FileUpload.class.php文件上传类，其中用到了两个常量，可在网站配置文件中定义：12define('ROOT_PATH',dirname(__FILE__));//网站根目录define('UPDIR','/uploads/')
文中案例叙述了PHP文件提交类。共享给大伙儿供各位参照，实际方式：
这儿演试了FileUpload.class.php文件提交类，在其中使用了2个变量定义，可在网址环境变量中界定：
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define('ROOT_PATH',dirname(._FILE._)); //网址网站根目录
define('UPDIR','/uploads/'); //提交主目录
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实际编码如下所示：
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<?php
//文件上传类
class FileUpload {
private $error; //错误码
private $maxsize; //表格最高值
private $type; //种类
private $typeArr = array('image/jpeg','image/pjpeg','image/png','image/x-png','image/gif'); //种类合辑
private $path; //文件目录途径
private $today; //今日文件目录
private $name; //文件夹名称
private $tmp; //临时文件夹
private $linkpath; //连接途径
private $linktotay; //今日文件目录（相对性）
//构造函数，复位
public function ._construct($_file,$_maxsize) {
$this->error = $_FILES[$_file]['error'];
$this->maxsize = $_maxsize / 1024;
$this->type = $_FILES[$_file]['type'];
$this->path = ROOT_PATH.UPDIR;
$this->linktotay = date('Ymd').'/';
$this->today = $this->path.$this->linktotay;
$this->name = $_FILES[$_file]['name'];
$this->tmp = $_FILES[$_file]['tmp_name'];
$this->checkError();
$this->checkType();
$this->checkPath();
$this->moveUpload();
}
//回到途径
public function getPath() {
$_path = $_SERVER["SCRIPT_NAME"];
$_dir = dirname(dirname($_path));
if ($_dir == '\') $_dir = '/';
$this->linkpath = $_dir.$this->linkpath;
return $this->linkpath;
} //挪动文档
private function moveUpload() {
if (is_uploaded_file($this->tmp)) {
if (!move_uploaded_file($this->tmp,$this->setNewName())) {
Tool::alertBack('警示：提交不成功！');
}
} else {
Tool::alertBack('警示：临时文件夹不会有！');
}
}
//设定新文件夹名称
private function setNewName() {
$_nameArr = explode('.',$this->name);
$_postfix = $_nameArr[count($_nameArr)-1];
$_newname = date('YmdHis').mt_rand(100,1000).'.'.$_postfix;
$this->linkpath = UPDIR.$this->linktotay.$_newname;
return $this->today.$_newname;
}
//认证文件目录
private function checkPath() {
if (!is_dir($this->path) || !is_writeable($this->path)) {
if (!mkdir($this->path)) {
Tool::alertBack('警示：主目录建立不成功！');
}
}
if (!is_dir($this->today) || !is_writeable($this->today)) {
if (!mkdir($this->today)) {
Tool::alertBack('警示：根目录建立不成功！');
}
}
}
//认证种类
private function checkType() {
if (!in_array($this->type,$this->typeArr)) {
Tool::alertBack('警示：不合理合法的提交种类！');
}
}
//认证不正确
private function checkError() {
if (!empty($this->error)) {
switch ($this->error) {
case 1 :
Tool::alertBack('警示：提交值超出了承诺最高值！');
break;
case 2 :
Tool::alertBack('警示：提交值超出了'.$this->maxsize.'KB！');
break;
case 3 :
Tool::alertBack('警示：仅有一部分文档被提交！');
break;
case 4 :
Tool::alertBack('警示：沒有什么文档被提交！');
break;
default:
Tool::alertBack('警示：未知错误！');
}
}
}
}
?>
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在其中，使用了一个静态数据java工具 Tool.class.php，编码如下所示：
Tool.class.php
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<?php
class Tool {
//弹出窗口回到
static public function alertBack($_info) {
echo "<script type='text/javascript'>alert('$_info');history.back();</script>";
exit();
} //弹出窗口取值关掉
static public function alertOpenerClose($_info,$_path) {
echo "<script type='text/javascript'>alert('$_info');</script>";
echo "<script type='text/javascript'>opener.document.content.thumbnail.value='$_path';</script>";
echo "<script type='text/javascript'>opener.document.content.pic.style.display='block';</script>";
echo "<script type='text/javascript'>opener.document.content.pic.src='$_path';</script>";
echo "<script type='text/javascript'>window.close();</script>";
exit();
} }
?>
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下边开展一个案例演试，请看下面的流程：
1.先建立一个 index.php 网页页面，做一个表格
index.php
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"/zb_users/upload/2021/11/02/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>main</title>
</head>
<body>
<form name="content" method="post" action="?action=add">
<input type="text" name="thumbnail" class="text" readonly="readonly" /> <input type="button" value="提交" onclick="centerWindow('./upfile.html','upfile','400','100')" /> <img name="pic" style="display:none;" /> ( * 务必是jpg,gif,png，而且200k内) <br />
</form>
</body>
</html>
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2.建立 upfile.html 文档，创建提交表单到 upload.php
upfile.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/zb_users/upload/2021/11/02/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>上传照片</title>
</head>
<body></p><p> <form method="post" action="./upload.php" enctype="multipart/form-data" style="text-align:center;margin:30px;">
<input type="hidden" name="MAX_FILE_SIZE" value="204800" />
<input type="file" name="pic" />
<input type="submit" name="send" value="明确提交" />
</form></p><p></body>
</html>
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3.根据 upload.php 文档启用上传文件类完成提交，而且把途径赋给 input 标识和表明照片
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<?php
require 'FileUpload.class.php';
if (isset($_POST['send'])) {
$_fileupload = new FileUpload('pic',$_POST['MAX_FILE_SIZE']);
$_path = $_fileupload->getPath();
Tool::alertOpenerClose('上传文件取得成功！',$_path);
} else {
Tool::alertBack('警示：文件过大或是别的未知错误造成浏览器崩溃！');
}
?>
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标签：PHP
