&reftitle.setup;

&reftitle.required; This extension requires libxml >= 2.9.4 as of PHP 8.4.0, libxml >= 2.9.0 prior to PHP 8.4.0, and libxml >= 2.6.0 prior to PHP 8.0.0.

The libxml extension is enabled by default, although it may be disabled with --without-libxml. PHP uses pkg-config to select the right library file, header files, and compile flags to use for libxml2. To ensure that the desired version of libxml2 is selected, the PKG_CONFIG_PATH environment variable may be used to control the search path for pkg-config prior to running the configure script:

The libxml extension is enabled by default, although it may be disabled with --disable-libxml. The optional --with-libxml-dir directive is used to specify the location of libxml on the system that PHP is being compiled on, otherwise only the default locations are scanned. The configure process checks for libxml (specifically, xml2-config) in the following order: The location ([DIR]) specified with --with-libxml-dir ([DIR]=/bin/xml2-config) /usr/local/bin/xml2-config /usr/bin/xml2-config If configure cannot find xml2-config in the directory specified by --with-libxml-dir, then it'll continue on and check the default locations.