Cache-which bandwidth does PHP occupy when uploading files to the cloud storage service?

I have a question: A WEB server, a database server, and an image server. If a user uploads an attachment through a PHP program, will the attachment occupy the resources of the web server (bandwidth and CPU, memory )? How to upload a user diagram if it will occupy web Server resources... I have a question: A WEB server, a database server, and an image server. If a user uploads an attachment through a PHP program, will the attachment occupy the resources of the web server (bandwidth and CPU, memory )?

How can I upload user images (attachments) if it will occupy web Server resources )?
If it is not used, is there any theoretical basis?

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I have a question: A WEB server, a database server, and an image server. If a user uploads an attachment through a PHP program, will the attachment occupy the resources of the web server (bandwidth and CPU, memory )?

How can I upload user images (attachments) if it will occupy web Server resources )?
If it is not used, is there any theoretical basis?

Of course, it is a server, because it is uploaded by php. You should use js to directly upload data to the ECS or directly upload data to the ECS through a form. This depends on which type of ECs is supported.

The user consumes the bandwidth to pass to the server, and the server receives the data to the cloud, which also consumes resources.
If only the client resources are consumed, which of the following cannot be configured on the server.