1.is_uploaded_file图片是否存在在临时文件夹内 move_loaded_file移动临时文件到指定根目录下
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> </head> <body> <form enctype="multipart/form-data" action="demo2.php" method="post"> <input type="hidden" name="MAX_FILE_SIZE" value="1000000" /> 上传文件:<input type="file" name="myfile" /> <input type="submit" value="上传" /> </form> </body> </html>
<?php
if(is_uploaded_file($_FILES[‘myfile‘][‘tmp_name‘]))//是否存在在临时文件夹里
{
if(!move_uploaded_file($_FILES[‘myfile‘][‘tmp_name‘],[‘myfile‘][‘name‘]))
{
echo"<script>alert(‘移动文件失败‘);history.back()</script>";
}
}
else
{
echo"<script>alert(‘临时文件夹找不到上传文件‘);history.back()</script>";
}
echo"<script>alert(‘上传成功‘);history.back()</script>";
?>
原文：http://www.cnblogs.com/niangaolizai/p/5727465.html