Example of form design for uploading multiple files in PHP, _php tutorial

Example of a form design that uploads multiple files in PHP,

Multiple file uploads and individual file uploads are handled the same way, with only a few input forms of type "file" in the client, and a different "name" attribute value specified. For example, in the following code, you can have the user select three local files to pass to the server together, and the client's form looks like this:
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Multiple file Upload forms

In the preceding code, a form of three file types is organized as an array. When the above form teaches PHP script file mul_upload.php, the server side also uses global array $_files to store all of the above-mentioned files, but $_files is transformed from a two-dimensional array into a three-dimensional array, so that it can store multiple uploaded files of information. In the script file mul_upload.php, use the Print_r () function to output the contents of the $_files array, as shown in the following code:

Copy the Code code as follows:
<?php
Print the contents of a three-dimensional array $_files, and look at the structure of the stored upload file
Print_r ($_files);
?>

When three local file submissions are selected, the output is as follows:
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Array (
[Myfile]=>array (
[name]=> Array (---$_files["myfile" ["name"] stores the contents of all uploaded files
[0]=>rav.ini---$_files["myfile" ["Name"][0] The name of the first uploaded file
[ 1]=>msgsocm.log---$_files["myfile" ["Name"][1] The name of the second upload file
[2]=>notepad. EXE)---$_files["myfile" ["Name"][2] The name of the third upload file
[Type]=>array (---$_files["myfile"] ["type"] stores all uploaded file types
[ 0]=>application/octet-stream---$_files["myfile" ["type"][0] the first type of upload file
[1]=>application/octet-stream-- -$_files["MyFile" ["type"][1] the second type of upload file
[2]=>application/octet-stream]---$_files["myfile" ["Type"][2] Type of the third upload file
[Tmp_name]=>array (
[0]=>c:\windows\temp\phpaf.tmp
[1]=>c:\windows\temp\phpb0.tmp
[2]=>c:\windows\temp\phpb1.tmp]
[Error]=>array (
[0]=>0
[1]=>0
[2]=>0]
[Size]=>array (
[0]=>64
[1]=> 1350
[2]=>66560])
)

By outputting the value of the $_files array, you can see that the upload of multiple files is the same as when uploading a single file, except that the $_files array has a slightly different structure. This way you can support a larger number of file uploads.

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