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This article explains how to retrieve a file’s last modification time in PHP using functions like filemtime(), stat(), and the DateTime class, and provides a practical example for detecting changes and notifying users.
This article explains three common Linux commands—ls, du, and stat—for checking file sizes, showing the exact syntax, example usage with a sample file, and how each command displays size information, including human‑readable formats.
The PHP stat() function returns an associative array containing detailed file metadata such as size, device ID, inode, permissions, timestamps and block information, and can be used by passing a filename to retrieve and display these attributes via array keys.