mysql-Extension library configuration issues when compiling PHP

When compiling PHP, there are a number of configuration options, as follows:

--with-curl=dir

--with-mysql=dir

--with-gd=dir

--enable-fpm

1: The above is not all PHP extension library, compile PHP together to compile, why some use--with, and some with--enable?

Issue 2: The above extension library in the PHP source file in the Ext directory, the dir stands for what meaning, the official explanation is not understand.

Reply content:

When compiling PHP, there are a number of configuration options, as follows:

--with-curl=dir

--with-mysql=dir

--with-gd=dir

--enable-fpm

1: The above is not all PHP extension library, compile PHP together to compile, why some use--with, and some with--enable?

Issue 2: The above extension library in the PHP source file in the Ext directory, the dir stands for what meaning, the official explanation is not understand.

1.--with is to compile it directly into the PHP executable file,--enable is compiled into. So or. dll and then load in php.ini.

1. --with are dependent on third-party libraries, but if a third-party library is in the default location, it can be ignored [=dir];--enable does not need to rely on third-party libraries.
2. Many of these extensions are just encapsulation of third-party libraries (providing binding), which is where the third-party library files need to be specified.

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