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Nov 25, 2025 · Backend Development

How to Increase PHP post_max_size for Large File Uploads

This guide explains what the PHP post_max_size directive does, why the default 8M limit often fails for large uploads, and provides step‑by‑step methods—including editing php.ini, using .htaccess, and runtime ini_set—to correctly configure post_max_size along with related settings such as upload_max_filesize, memory_limit, and max_execution_time.