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# PHP fileowner() Function * * Complete PHP Filesystem Reference Manual * * * ## Definition and Usage The fileowner() function returns the user ID (owner) of the specified file. If successful, this function returns the user ID. If failed, it returns FALSE. ## Syntax fileowner(filename) | Parameter | Description | | :--- | :--- | | filename | Required. Specifies the file to check. | * * * ## Tips and Notes **Note:** The result of this function is cached. Please use clearstatcache() to clear the cache. **Note:** This function does not work on Windows systems. **Tip:** Please use posix_getpwuid() to convert the user ID to a username. * * * ## Example * * Complete PHP Filesystem Reference Manual AI is thinking... (#) (#)[](#) ByteArk Coding Plan supports mainstream large models such as Doubao, GLM, DeepSeek, Kimi, MiniMax, etc., officially supplied, stable and reliable. Configuration Guide ¥9.9/month Subscribe Now ###