Php example: how to upload multiple php files

This article mainly introduces the implementation of PHP file uploading as many files as possible. For more information, see Multifile Upload

① Use multiple name values

A. The data format received after clicking submit

Array([file1] => Array([name] => 8.png[type] => image/png[tmp_name] => G:\wamp\tmp\php737.tmp[error] => 0[size] => 200)[file2] => Array([name] => 28.png[type] => image/png[tmp_name] => G:\wamp\tmp\php738.tmp[error] => 0[size] => 6244)[file3] => Array([name] => 54a296f8n6787b34c.png[type] => image/png[tmp_name] => G:\wamp\tmp\php739.tmp[error] => 0[size] => 3143)[file4] => Array([name] => 54c0573dncb4db6f7.jpg[type] => image/jpeg[tmp_name] => G:\wamp\tmp\php788.tmp[error] => 0[size] => 5404))

It can be seen from this format that each file corresponds to an array unit.

Therefore, use foreach to traverse the array and call the file upload function for each array unit.

B. click submit.

① Receive uploaded file information

$ File = $ _ FILES;

② Introduce the upload function

include('./functions.php');

③ Set the file storage path

$ Path = './uploads/'; // you must manually create this directory.

④ Call the file upload function

Foreach ($ file as $ v) {$ info = uploadFile ($ v, $ path); ⑤ determine the upload status if ($ info ['isok']) {echo 'upload successful '. $ info ['message'];} else {echo 'upload failed '. $ info ['message'] ;}}

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② Use a single name value

A. Method 1

B. Method 2

C. The data format received after clicking submit

Array([userpic] => Array([name] => Array([0] => 8.png[1] => 9b2d7581fba543ec9bcf95e91018915a.gif[2] => 12.jpg)[type] => Array([0] => image/png[1] => image/gif[2] => image/jpeg)[tmp_name] => Array([0] => G:\wamp\tmp\php85E5.tmp[1] => G:\wamp\tmp\php85E6.tmp[2] => G:\wamp\tmp\php8635.tmp)[error] => Array([0] => 0[1] => 0[2] => 0)[size] => Array([0] => 200[1] => 16503[2] => 19443)))

It can be seen from this format that the information of the uploaded files is stored separately in each subscript.
So what we need to do is to splice a complete file information, a one-dimensional array.

Array([name] => 54c0573dncb4db6f7.jpg[type] => image/jpeg[tmp_name] => G:\wamp\tmp\php788.tmp[error] => 0[size] => 5404)

Therefore, the operation is to traverse $ _ FILES ['file'] and retrieve the information of each uploaded file.

D. click submit.

① Receive uploaded file information

$ File = $ _ FILES ['file'];

② Introduce the upload function

Include ('./functions. php ');

③ Set the file storage path

$ Path = './uploads/'; // you must manually create this directory.

④ Call the file upload function

foreach($file['name'] as $key=>$value){$data['name'] = $file['name'][$key];$data['type'] = $file['type'][$key];$data['tmp_name'] = $file['tmp_name'][$key];$data['error'] = $file['error'][$key];$data['size'] = $file['size'][$key];$info = uploadFile($data,$path);

⑤ Determine the upload status

If ($ info ['isok']) {echo 'uploaded successfully '. $ info ['message'];} else {echo 'upload failed '. $ info ['message'] ;}}

A. Traverse $ file ['name'] only to get $ key

B. retrieve the file information corresponding to the underlying object every traversal and assign a value to the corresponding key in the new array.

For example, $ key = 0 for the first time;

$ Data ['name'] = $ file ['name'] [0]; // It is equivalent to extracting the name of the first file $ data ['type'] = $ file ['type'] [0]; // It is equivalent to extracting the type of the first file

...

After the first traversal

$data = array([name] => 54c0573dncb4db6f7.jpg[type] => image/jpeg[tmp_name] => G:\wamp\tmp\php788.tmp[error] => 0[size] => 5404);

In this way, all the information of the first file is retrieved.

Then, call the upload function to upload files.

The second time lasted $ key = 1, which is equivalent to obtaining the information of the second uploaded File