PHP is a popular general-purpose scripting language. It can be embedded in HTML documents and is frequently used as a server-side language for web development but can also be used for command-line scripts. It is cross-platform and has various front-ends ("SAPIs") that can be used in conjunction with many web servers. This main package includes the most common SAPIs: cli (the stand-alone binary which can be used for command-line scripts) and fpm (the "FastCGI process manager" which manages a pool of separate processes that accept web-server requests over the FastCGI protocol). Other SAPIs are packaged separately: php-cgi ("old style" CGI binary), php-dbg (debugger), php-apache (an Apache 2 module). Many language extensions are available - the most common are included directly in the main packages, but others (usually requiring additional dependencies) are packaged separately, notably those adding database connectivity.
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