How to Download Large Files from a URL to a Server Without Memory Issues?

Download File from URL to Server without Memory Issues

Downloading files to a server from a URL is a common task, but it can become a problem when dealing with large files due to memory limitations. This question explores a solution to this issue.

Problem:

Traditional methods for downloading files, such as file_get_contents() followed by file_put_contents(), can encounter memory issues when handling large files, causing downloads to fail.

Solution:

To avoid memory problems, PHP provides an alternative approach using a stream resource as the data parameter for file_put_contents(). This method allows for writing the file directly to the disk as it is being downloaded, preventing memory exhaustion.

Code:

file_put_contents("Tmpfile.zip", fopen("http://someurl/file.zip", 'r'));

Explanation:

By passing a stream resource to file_put_contents(), the PHP stream copy mechanism is utilized to transfer data directly from the source URL to the target file. This avoids the need to load the entire file into memory, solving the memory exhaustion problem.

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