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PHP multiple file upload operation_PHP tutorial
- WBOYOriginal
- 2016-07-13 10:21:33823browse
PHP multi-file upload operation
In fact, multiple file uploads and single file uploads are similar. The principles are the same, but there are some tricks in the code.
The first is the index.html upload form, but the file in the previous file upload form is changed to file[]
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Upload file:
Upload file:
Upload file:
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Use $_FILES in upload.php to print it
print_r($_FILES);
?>
Get the following multi-dimensional array
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Array
(
[file] => Array
(
[name] => Array
(
[0] => Photo 1.jpg
[1] => Photo 2.jpg
)
[tmp_name] => Array
(
[0] =>
[1] =>
[2] =>
) )
)
)
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According to the principle of single file upload, first think about what we need to get?
Obviously we need to get an array of file information. The array contains name, type, tmp_name, error, size. What we get at this time is a multi-dimensional array. Although the corresponding key values exist, it is multi-dimensional. ,
We only need to split it, such as the three files above, we only need to split it into the corresponding three file information arrays.
Structure of split array
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Array
(
[0] => Array
(
[name] => Photo 1.jpg
[type] => image/jpeg
>
>
)
>
>
)
[2] => Array
(
[name] => Photo 3.jpg
[type] => image/jpeg
>
>
) $tempName=$files[$i]['tmp_name'];//Temporary file name
//Define upload file type
$typeList = array("image/jpeg","image/jpg","image/png","image/gif"); //Define allowed types
if($fileError>0){
//Judge the error number of uploaded files
switch ($fileError) {
case 1:
$ message = "uploaded files exceeded the value restricted by upload_max_filesize options in php.ini.";
break;
case 2:
$message="The size of the uploaded file exceeds the value specified by the MAX_FILE_SIZE option in the HTML form.";
break;
case 3:
$message="Only part of the file has been uploaded.";
break;
case 4:
$message="No files uploaded.";
break;
case 6:
$ message = "Can't find the temporary folder.";
break;
case 7:
$message="File writing failed";
break;
case 8:
$message="File upload interrupted due to PHP extension";
break;
}
exit("File upload failed: ".$message);
}
if(!is_uploaded_file($tempName)){
//Determine whether it is a file uploaded by POST
exit("It was not uploaded via HTTP POST");
}else{
if(!in_array($fileType, $typeList)){
exit("The uploaded file is not of the specified type");
}else{
if(!getimagesize($tempName)){
// Prevent users from uploading malicious files, such as changing the virus file extension to image format
exit("The uploaded file is not a picture");
}
}
if($fileSize>1000000){
’ ’ ’ to ’ ’ out‐‐ together ‐ out‐download of a specific form to be uploaded
exit("Uploaded file exceeds limit size");
}else{
// Avoid the Chinese name garbled in the Chinese name
$fileName=iconv("UTF-8", "GBK", $fileName);//Convert the character encoding captured by iconv from utf-8 to gbk output
$ filename = strlaplace (".", Time (). ".", $ Filename); // Add the time stamp after the picture name, avoid the re -name file coverage
echo "File uploaded successfully!";
}else{
having having - echo "Failed to upload file";
}
}
}
}
?>
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