Multiple file uploads and individual file uploads are handled the same way, simply by providing several input forms of type "file" to the client and specifying different "name" property values. 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:
In the above code, the forms of three file types are organized together in an array. When the above form teaches PHP script file mul_upload.php, the server side also uses the global array $_files to store all of the above file information, but $_files from the two-dimensional array has been converted to three-dimensional array, so that can store multiple uploaded file 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:
When three local file submissions are selected, the output looks like this:
By outputting the value of the $_files array, you can see that the processing of multiple file uploads is the same as when a single file is uploaded, except that the structure of the $_files array is slightly different. This way you can support a larger number of file uploads.
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