PHP 文件上传的综合实例

1、upload.php
请简单介绍文件

<?<span php<span /*<span ** 文件上传 接收数据* by www.jbxue.com<span */<span $username=<span $_post['username'<span ];<span $fileintro=<span $_post['fileintro'<span ];<span //<span echo $username.$fileintro;//获取文件信息<span /*<span  echo ;print_r($_files);echo <br>
;<span */ <span //<span 获取文件的大小<span $file_size=<span $_files['myfile']['size'<span ];<span if(2*1024*1024<span ){<span echo <span ;<span exit<span ();}<span //<span 获取文件类型<span $file_type=<span $_files['myfile']['type'<span ];<span if(<span $file_type!=image/jpeg && <span $file_type!=image/pjpeg<span ){<span echo 文件类型只能是 jpg 格式<span ;<span exit<span ();}<span //<span 判断上传是否ok<span if(<span is_uploaded_file(<span $_files['myfile']['tmp_name'<span ])){<span //<span 得到上传的文件 转存到你希望的目录<span $upload_file=<span $_files['myfile']['tmp_name'<span ];<span //<span 防止图片覆盖问题，为每个用户建立一个文件夹 <span $user_path=<span $_server['document_root']./file/up/.<span $username<span ;<span if(!<span file_exists(<span $user_path<span )){<span mkdir (<span $user_path<span );}<span //<span $move_to_file=$user_path./.$_files['myfile']['name'];//防止用户上传用户名相同的问题<span $file_true_name=<span $_files['myfile']['name'<span ];<span $move_to_file=<span $user_path./.<span time().<span rand(1,1000).<span substr(<span $file_true_name,<span strripos(<span $file_true_name,.<span ));<span //<span echo $upload_file.$move_to_file;//中文要转码<span if(<span move_uploaded_file(<span $upload_file,<span iconv(utf-8,gb2312,<span $move_to_file<span ))){<span echo <span $_files['myfile']['name'].上传成功<span ;}<span else<span {<span echo 上传失败<span ;}}<span else<span {<span echo 上传失败<span 3、封装：<br>
<?<span php<span /*<span ** 文件上传类* by www.jbxue.com<span */<span class<span  upload{<span public <span $upload_name; <span //<span 上传文件名<span public <span $upload_tmp_path; <span //<span 上传文件保存到服务器的temp路径<span public <span $file_size<span ;<span public <span $file_type<span ;<span public <span $file_save_path<span ;<span function<span  __construct(){upload_name=<span $_files['myfile']['name'<span ];upload_tmp_path=<span $_files['myfile']['tmp_name'<span ];file_size=<span $_files['myfile']['size'<span ];file_type=<span $_files['myfile']['type'<span ];allow_file_type = <span array('jpeg','jpg','png','gif','bmp','doc','zip','rar','txt','wps','xlsx','ppt'<span );file_save_path=<span $_server['document_root']./file/up/<span ;}<span public <span function upload_file(<span $username<span ){<span //<span 判断文件大小2*1024*1024<span ){<span echo <span ;<span exit<span ();}<span //<span 获取文件类型file_type!=image/pjpeg){echo 文件类型只能是 jpg 格式;exit();}<span */ <span //<span 获取文件的扩展名<span $file_type=getfileext(<span upload_name);<span if(!<span in_array(<span $file_type,<span allow_file_type)){<span echo 上传文件类型格式错误<span ;<span exit<span ();} <span //<span 判断上传是否ok<span if(<span is_uploaded_file(<span upload_tmp_path)){<span //<span 防止图片覆盖问题，为每个用户建立一个文件夹 <span $user_path=file_save_path.<span $username<span ;<span if(!<span file_exists(<span $user_path<span )){<span mkdir (<span $user_path<span );}<span //<span $move_to_file=$user_path./.$_files['myfile']['name'];//防止用户上传用户名相同的问题//$file_true_name=$_files['myfile']['name'];<span $move_to_file=<span $user_path./.<span time().<span rand(1,1000).<span substr(upload_name,<span strripos(upload_name,.<span ));<span //<span echo $upload_file.$move_to_file;//中文要转码<span if(<span move_uploaded_file(upload_tmp_path,<span iconv(utf-8,gb2312,<span $move_to_file<span ))){<span echo upload_name.上传成功<span ;}<span else<span {<span echo 上传失败<span ;}}<span else<span {<span echo 上传失败<span ;}}<span //<span 获取文件的扩展名<span public <span function getfileext(<span $filename<span ){<span $fileext=<span pathinfo(<span $filename<span );<span return <span $fileext[extension<br>
http://www.bkjia.com/phpjc/440411.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/440411.htmltecharticle1、upload.php !doctype html -//w3c//dtd html 4.01 transitional//enhtmlheadtitleadd文件上传_www.jbxue.com/titlemeta http-equiv=content-type content=text/html; charset=utf-...<br>

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PHP 文件上传的综合实例_PHP教程