This is a suggestion of compilation directive to use when compiling PHP specifically for the audited code.
The selection made below is based on the extension usage, found in the code (--enable, --with) and also the absence of usage (--disable, --without).
Some local extensions (--pdo-mysql, --with-libmbfl...) are also mentionned for help.
# install one extra extension
#pecl install redis (https://pecl.php.net/package/redis)
;;;;;;;;;;;;;;;;;;;;;;;;
; PHP configure list ;
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./configure
--with-curl=DIR
--disable-dom
--disable-fileinfo
--with-gettext=DIR
--without-iconv
--disable-libxml
--with-mysqli
--with-openssl[=DIR]
--disable-pdo
--without-pear
--disable-posix
--enable-redis
--disable-redis-session
--enable-redis-igbinary
--without-sqlite3
--disable-tokenizer
--disable-xmlreader
--with-xmlrpc[=DIR]
--disable-xmlwriter
--with-zlib=DIR
; For debug purposes
;--enable-dtrace
;--disable-phpdbg
;--enable-zend-signals
;--disable-opcache