PHP uploading images to the server

The $_files system function is used in the PHP file crossing.

First, $_files system functions

Common $_files system function usages in the PHP programming language are:
$_files[' myFile ' [' name '] Displays the original name of the client file.
$_files[the MIME type of the ' myFile ' [' type '] file, such as "Image/gif".
$_files[' myFile ' [' size '] the size of the uploaded file, in bytes.
$_files[' myFile ' [' tmp_name '] The temporary file name stored, usually the system default.

Second, common functions

Common $_files system function usages in the PHP programming language are: $_files[' myFile ' [' name '] Displays the original name of the client file. $_files[the MIME type of the ' myFile ' [' type '] file, such as "Image/gif". $_files[' myFile ' [' size '] the size of the uploaded file, in bytes. $_files[' myFile ' [' tmp_name '] The temporary file name stored, usually the system default. $_files[' myFile ' [' ERROR '] The file uploads the relevant error code. The following are the meanings represented by different codes: 0; File upload succeeded. 1; The size of the system is exceeded in the file size php.ini. 2; The value specified by the File size max_file_size option is exceeded. 3; Only part of the file is uploaded. 4; No files were uploaded. 5; The upload file size is 0. Third, php file upload

To upload a file through a form, you first need to mark <form action= "setting.php" enctype= "Multipart/form-data" method= "POST" >. The following HTML code:

<form action= "setting.php" enctype= "Multipart/form-data" method= "POST" > <div class= "left" > Merchant Shop Name: & lt;br/> <input name= "Sjname" class= "input1" type= "text" ><br/> contact phone:<br/> <input Name = "Sjphone" class= "input1" type= "text" ><br/>QQ:<br/> <input name= "sjqq" class= "input1" type= "text "><br/> slogan:<br/> <input name=" Sjad "class=" input1 "type=" text "placeholder=" 20 words or less ">& lt;br/> </div> <div class= "right" > Upload cover Map: (Recommended 320*120) <br/> <input type= "Tex T "readonly=" readonly "name=" file_name "id=" file_name "class=" Fileinput "/><input type=" file "Name=" Img_file " Style= "Display:none" onchange= "File_change (this.value)"/><input type= "button" value= "Browse onclick=" Img_ File.Click (); "Name=" Get_file "class=" Liulan "/><br/> Merchant profile:<br/> <textarea name=" sjbrief "class=" Te Xtarea "placeholder=" within 100 words "></textarea> </div> <div class= "clear" > </div> <p> <input class= "buttons Ave "Type=" submit "value=" Save Settings "/>|<a style= ' text-decoration:none; ' href=" binding.php?ac=del "target =" _top " ><input class= "buttonquit" type= "button" value= "unbind AP"/></a> </p> </form>

The PHP code is as follows:

<?php/** * Created by Phpstorm. * User:funmi * date:14-9-10 * Time: PM 6:57 */include_once ('./common.php '); if ($_sglobal[' login ']==true) {$cover _pic =    Upload_store_pic ();    $store _name = $_post[' sjname ');    $tel _number = $_post[' Sjphone ');    $ad _words = $_post[' Sjad ');    $store _introduce = $_post[' sjbrief ');    $QQ _number = $_post[' sjqq '); $setarr =array (' cover_pic ' = $cover _pic, ' store_name ' + $store _name, ' tel_number ' = $tel _number    , ' ad_words ' = $ad _words, ' store_introduce ' and $store _introduce, ' qq_number ' + $qq _number); Updatetable (Tname (' Open_member_weixin_ap '), $setarr, Array (' Apid ' =>$_cookie[' apid '], ' id ' =>$_cookie[' id '))    ;    $smarty->assign (' Loginuser ', $_cookie[' loginuser ');    $smarty->display (' setting.dwt '); Exit ();}    Gourl (' binding.php '); function upload_store_pic () {//File save path $save _path = './uploads/store_pic/';    if (!file_exists ($save _path)) {mkdir ($save _path); }//define Allow onThe file extension $ext _arr = array (' image ' = = Array (' gif ', ' jpg ', ' jpeg ', ' PNG ', ' bmp '));    Maximum file size $max _size = 1000000;                 PHP upload failed if (!empty ($_files[' img_file ' [' Error '])) {switch ($_files[' img_file ' [' Error ']) {case ' 1 ': $error = ' exceeds the allowable size of php.ini.                ';            Break Case ' 2 ': $error = ' exceeds the size allowed by the form.                ';            Break Case ' 3 ': $error = ' picture is only partially uploaded.                ';            Break Case ' 4 ': $error = ' Please select the picture.                ';            Break Case ' 6 ': $error = ' cannot find the temp directory.                ';            Break Case ' 7 ': $error = ' ERROR writing file to hard disk.                ';            Break Default: $error = ' Unknown error.        ';        } showmessage ($error);    Return ';        }//have upload file if (empty ($_files) = = = False) {//original file name $file _name = $_files[' img_file ' [' name ']; Temporary file name on server $tmp _name = $_files[' Img_filE ' [' tmp_name '];        File size $file _size = $_files[' img_file ' [' Size ']; Check the filename if (! $file _name) {showmessage ("Please select File.            ");        Return '; }//Check the directory if (@is_dir ($save _path) = = = False) {ShowMessage ("The upload directory does not exist.            ");        Return '; }//Check the directory Write permission if (@is_writable ($save _path) = = = False) {showmessage ("Upload directory does not have write permission.            ");        Return '; }//Check if the IF (@is_uploaded_file ($tmp _name) = = = False) {ShowMessage ("upload failed.            ");        Return '; }//Check file size if ($file _size > $max _size) {showmessage ("Upload file size exceeds limit.            ");        Return '; }//Check the directory name $dir _name = Empty ($_get[' dir ')?        ' Image ': Trim ($_get[' dir '); if (Empty ($ext _arr[$dir _name])) {showmessage ("The directory name is incorrect.            ");        Return ';        }//Get file extension $temp _arr = explode (".", $file _name); $file _ext = Array_pop ($temp _arr);        $file _ext = Trim ($file _ext);        $file _ext = strtolower ($file _ext); Check the extension if (In_array ($file _ext, $ext _arr[$dir _name]) = = = False) {ShowMessage ("The upload file name extension is not allowed.            ");        Return '; }//New file name $new _file_name = Date ("Ymdhis"). '_' . RAND (10000, 99999). ' _apid_ '. $_cookie[' Apid '. '.' .        $file _ext; Move file $file _path = $save _path.        $new _file_name; if (Move_uploaded_file ($tmp _name, $file _path) = = = False) {ShowMessage ("failed to upload the file.            ");        Return ';        } @chmod ($file _path, 0777);    return $file _path;    }else{return '; }}

PHP uploading images to the server