sapis
SAPIs, in the context of PHP, stand for Server Application Programming Interfaces. The SAPI layer provides the interface between the PHP interpreter and the execution environment, such as a web server or a command-line shell. It defines how requests are received, how input is presented to PHP, and how output is delivered back to the client. By abstracting server-specific details, SAPIs allow PHP code to run in a variety of contexts with minimal changes.
Common SAPIs include the Apache module (mod_php), CGI, FastCGI, PHP-FPM (FastCGI Process Manager) used with web
PHP provides ways to identify the current SAPI at runtime, such as the php_sapi_name() function and the
The choice of SAPI influences performance characteristics, security considerations, and feature availability. For instance, CLI lacks