PHP multi-File upload operation,
In the previous article about the PHP file upload principle and simple operation example is a single file upload.
Http://www.cnblogs.com/lichenwei/p/3879566.html
In fact, multi-file upload and single-file upload is similar, the principle is the same, just a bit of code to do a little tricks.
First or index.html upload the form, just to change the file in the form of the previous upload to file[]
DOCTYPE HTML Public "-//W3C//DTD XHTML 1.0 transitional//en" "http://www.w3.org/TR/xhtml1/DTD/ Xhtml1-transitional.dtd "><HTMLxmlns= "http://www.w3.org/1999/xhtml"Xml:lang= "en"><Head> <Metahttp-equiv= "Content-type"content= "Text/html;charset=utf-8"> <title>Upload files
title>
Head><Body> <formAction= "upload.php"enctype= "Multipart/form-data"Method= "POST"> <inputtype= "hidden"name= "Max_file_size"value= "100000" />Upload file:<inputtype= "File"name= "file[]"/><BR/>Upload file:<inputtype= "File"name= "file[]"/><BR/>Upload file:<inputtype= "File"name= "file[]"/><BR/> <inputtype= "Submit"value= "Upload" />
form>
body>
HTML >
Print a look at upload.php with $_files
Php
Print_r ($_files
?>
The following multidimensional arrays are derived
Array( [file] =Array([name]=Array ( [0] = photo 1.jpg [1] = Photo 2.jpg [2] = Photo 3.jpg) [Type]=Array ( [0] = image/JPEG [1] = image/JPEG [2] = image/jpeg) [Tmp_name]=Array ( [0] = F:\wamp\tmp\php36C7.tmp [1] = F:\wamp\tmp\php36C8.tmp [2] = F:\wamp\tmp\php36C9.tmp) [ERROR]=Array ( [0] = 0 [1] = 0 [2] = 0) [Size]=Array ( [0] = 0 [1] = 0 [2] = 0 ) ))
According to the principle of single file upload, first think about what we need to get?
Obviously we need to get an array of information about the file, the array contains Name,type,tmp_name,error,size, and at this point we get a multidimensional array, although the corresponding key value exists, but it is multidimensional,
We just need to split it, like the above 3 files, we just need to split it into the corresponding 3 file information array on the line.
Structure of a split fraction group
Array ([ 0] = = Array ([name] => photo 1. jpg [type] = image/ jpeg [tmp_name] = = F:\wamp\tmp\php13C1. tmp [ERROR] = 0 [size] = + 385150 ) [ 1] = = Array ([name] = Photo 2. jpg [type] = image/ jpeg [tmp_name] = = F:\wamp\tmp\php13D2. tmp [ERROR] = 0 [size] = + 242043 ) [ 2] = = Array ([name] = Photo 3. jpg [type] = image/ jpeg [tmp_name] = = F:\wamp\tmp\php13D3. tmp [ERROR] = 0 [size] = = 488293 ))
The following is a split-up of the reorganized array code
PHP //print_r ($_files[' file '); $arr=$_files[' file ']; $files=array(); for ($i= 0; $i<count($arr[' name ']); $i+ +) {$files[$i] [' name ']=$arr[' name '] [$i ]; $files [$i] [' type ']=$arr[' type '] [$i] ; $files [$i] [' Tmp_name ']=$arr[' tmp_name '] [$i] ; $files [$i] [' Error ']=$arr[' Error '] [$i] ; $files [$i] [' Size ']=$arr[' Size '] [$i] ; } Print_r ($files);
?>The rest of the stuff is simple, repeat the steps of the single file upload, and iterate over the array on the line.
The code is as follows:
Php//print_r ($_files[' file '); $arr=$_files[' File ']; $files=Array(); for($i= 0;$i<Count($arr[' name ']);$i++){//count () Statistics array key value name length $files[$i[' Name ']=$arr[' Name '] [$i]; $files[$i[' Type ']=$arr[' type '] [$i]; $files[$i[' Tmp_name ']=$arr[' Tmp_name '] [$i]; $files[$i[' Error ']=$arr[' ERROR '] [$i]; $files[$i[' Size ']=$arr[' Size '] [$i]; } for($i= 0;$i<Count($files);$i++){ //Get upload file information $fileName=$files[$i[' Name ']; $fileType=$files[$i[' Type ']; $fileError=$files[$i[' Type ']; $fileSize=$files[$i[' Size ']; $tempName=$files[$i[' Tmp_name '];//temp file name//definition upload file type $typeList=Array("Image/jpeg", "image/jpg", "Image/png", "image/gif");//define the allowed types if($fileError>0){ //Upload file error number judgment Switch($fileError) { Case1:$message= "The uploaded file exceeds the value of the Upload_max_filesize option limit in php.ini. "; Break; Case2:$message= "The size of the uploaded file exceeds the value specified by the Max_file_size option in the HTML form." "; Break; Case3:$message= "The file is only partially uploaded. "; Break; Case4:$message= "No files were uploaded." "; Break; Case6:$message= "The Temp folder could not be found." "; Break; Case7:$message= "File Write Failed"; Break; Case8:$message= "File upload interrupted due to PHP extension"; Break; } Exit("File Upload failed:".)$message); } if(!Is_uploaded_file($tempName)){ //determine if it is a post-uploaded file. Exit("not uploaded by HTTP POST"); }Else{ if(!In_array($fileType,$typeList)){ Exit("uploaded file is not a specified type"); }Else{ if(!getimagesize($tempName)){ //prevent users from uploading malicious files, such as changing the virus file name extension to picture format Exit("The uploaded file is not a picture"); } } if($fileSize>1000000){ //limit the size of upload files for specific forms Exit("Upload file exceeds the limit size"); }Else{ //avoid uploading files in Chinese name garbled $fileName=Iconv("UTF-8", "GBK",$fileName);//Convert the character encoding Iconv crawled from utf-8 to GBK output $fileName=Str_replace(".", Time().".",$fileName);//Add a timestamp after the name of the image to avoid overwriting files with duplicate names if(Move_uploaded_file($tempName, "uploads/".$fileName)){ Echo"Upload the file successfully!" "; }Else{ Echo"Upload file Failed"; } } } }?>
The effect is as follows:
http://www.bkjia.com/PHPjc/853717.html www.bkjia.com true http://www.bkjia.com/PHPjc/853717.html techarticle PHP Multi-File upload operation, in the previous article about the PHP file upload principle and simple operation example is a single file upload. Http://www.cnblogs.com/lichenwei/p/3879566.html actually ...
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