$_FILES与move_uploaded_file就可以在php代码中实现文件或图片上传了,这个比起很多编程语言来讲php上传功能是最简单最好用的了,下面来看个上传图片工作代码,代码如下:
- <?php
- session_start();
- ?>
- <html xmlns="http://www.phpfensi.com/ 1999/xhtml">
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <title>PHP上传文件</title>
- <style>
- * {margin:0; padding:0; list-style:none;}
- .content {width:400px; height:200px; margin:0 auto; margin-top:60px;
- background:#ffd3b6; border:dashed 1px #f90}
- .content h1 { width:400px; height: 30px; line-height:30px; text-align:
- center; font-family:"微软雅黑"; font-size:14px; color:#000}
- .content .error {width:300px; height:30px; line-height:30px;
- text-align:center; margin:0 auto; color:#f00}
- .content .con {width:340px; height:auto; margin:0 auto; font-size:12px;}
- .content #file { width:280px; height:20px; border:solid 1px #ccc;
- background:#fff; margin:10px 0px 6px 0; font-size:12px;}
- .content #send { width:60px; height:22px; border:solid 1px #ccc;
- background:#fff; font-size:12px; margin-top:10px;}
- </style>
- </head>
- <body>
- <div>
- <h1>文件上传</h1>
- <div>
- <div>
- <?php
- if ($_GET['up']==up) {
- if ($_SESSION['file']==$_GET['irand']) {
- $_size=20000;
- $_dir='phone/';
- function size($_size) {
-
- if ($_size>1024*1024) {
- return round($_size/1024/1024,2).' MB';
- }else if ($_size>1024) {
- $_size=$_size/1024;
- return ceil($_size).'KB';
- }else {
- return $_size.' bit';
- }
- }
-
- $_upfiles = array('image/jpeg','image/pjpeg','image/png','image/x-png','image/gif');
- if (is_array($_upfiles)) {
- if (!in_array($_FILES['userfile']['type'],$_upfiles)) {
- exit('请上传格式为：jpg,png,gif的文件<br /><a href="upload.php">返回</a>');
- }
- }
- if ($_FILES['userfile']['size']>$_size) {
- exit('上传文件不能超过：'.size($_size));
- }
- if ($_FILES['userfile']['error']>0) {
- switch ($_FILES['userfile']['error']) {
- case 1: echo '上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值';
- break;
- case 2: echo '上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值';
- break;
- case 3: echo '文件只有部分被上传';
- break;
- case 4: echo '没有文件被上传';
- break;
- case 6: echo '找不到临时文件夹';
- break;
- case 7: echo '文件写入失败';
- break;
- }
- exit;
- }
-
- if (!is_dir($_dir)) {
- mkdir($_dir,0700);
- }
- $_rand=mt_rand(0,100000);
- $_n=explode('.',$_FILES['userfile']['name']);
- $_file_len=count($_n);
- $_name=$_dir.time().'_'.$_rand.'.'.$_n[$_file_len-1];
- if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
- if (!@move_uploaded_file($_FILES['userfile']['tmp_name'],$_name)) {
- exit('文件移动失败');
- }else {
- echo '文件上传成功<br />';
- echo '文件路径：'.$_name.'<br />';
- echo '文件大小：'.size(filesize($_name));
- echo '<br /><a href="upload.php">返回继续上传</a>';
- }
- }else {
- exit('上传的临时文件不存在，无法将文件移动到指定文件夹');
- }
-
-
-
- session_destroy();
- exit;
- }else {
- exit('您已经提交过了，不能重复提交<br /><a href="upload.php">返回</a>');
- }
- }
- ?>
- </div>
- <?php $_irand=mt_rand(0,1000000); $_SESSION['file']=$_irand; ?>
- <form action="?up=up&irand=<?php echo $_irand; ?>" method="post" enctype="multipart/form-data">
- <input type="hidden" name="MAX_FILE_SIZE" value="1000000" />
- <input type="file" name="userfile" id="file"/><br />
- <input type="submit" name="send" value=" 点击上传 " id="send"/>
- </form>
- </div>
- </div>
- </body>
- </html>
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