Send files before the php script executes

Hi, Anybody knows if is posible in Linux with PHP to do upload of several files sending the data before that php script executes. Now in my server you do the upload (with html,form, multipart ...) and first all the files are upload and them the php script is executed. The idea is the next: In the server in my php script I want to proccess each file separated because if the conexion is lost the user don't have to send all the files again , only have to send the files that haven't been uploaded and proccessed. It seems hard. Thanks in advance. ;-) Ruben Alutiz