How to change PHP parameters when you don't have access to php.ini
On shared hosting where ISPs restrict access to the system-wide php.ini file, you can override PHP settings on a per-directory basis using directives in your .htaccess file. The syntax `php_flag` and `php_value` allow you to configure settings like register_globals, magic_quotes_gpc, display_errors, memory_limit, and max_execution_time without modifying the server's global configuration. However, ISP restrictions may still prevent you from changing certain settings even through .htaccess, particularly memory and execution time limits.