PHP website Access exception, the server in the client room, normal operation, but the customer there is no normal operating system!

Php

PHP website Access exception, the server in the client room, normal operation, but the customer there is no normal operating system, normal access to the system!
1. After the Excel upload operation, the file has been uploaded successfully, and saved to the database, the process takes a long time, 2-3 minutes, but the page does not jump successfully, white screen after the prompt page can not be opened, and my own machine including Friends of the machine, the operation is normal jump to "operation Success" Prompt page!
2.php calls the stored procedure, takes 2-3 minutes, the result is the same as above! Check the server no problem, my side all machine test is normal!
3. Export Excel table, take 1-2 minutes, sometimes successfully exported, sometimes very slow to export, and sometimes wait a long time, the Web page lockout.
All of the above, in my company's machine will not appear, remote to other non-client side of the machine test, is also normal execution!
Customers disorderly complaints, seek the great God weapon!

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