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Asked: 2026-05-31T13:55:36+00:00

I’ve discovered that php supports a special php://memory path to create a temporary memory

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I’ve discovered that php supports a special “php://memory” path to create a temporary memory stream with fopen(). Is there any way to get a unique path that maps to this stream via the file system?

I probably worded that wrong but what I need to do is use curl to upload a file via POST, and the only way that I’ve gotten this to work is by addressing a file with "@".filename in the post arguments.

However, the thing is I already have the file contents in a variable and don’t want to write it to a file on disk just to have curl read it from disk and then delete the file. Can I pass something like “php://memory/identifier” to identify the memory stream while it is open?

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  1. Editorial Team

    No. php://memory is a buffer located in memory only, and thus is not mapped into the file system.

    If you wanted to have a path to pass to curl that was memory-based, you’d need to create an actual ramdisk mount on your server that you could write to from PHP and then pass that path to cURL.

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