Get current PHP install settings

Question

I wanted to get the settings of the current installed PHP on my server. I don't want to have the settings of PHP(.ini) itself, I need the /configure parameters how the PHP is currently installed. E.g. the values of --prefix or --includedir or --sysconfdir of my currently PHP ...

Edit: I know that phpinfo() will output the settings but on my server isn't a Configure Command field with the information! How do I get these information?

Edit #2: Does nobody understand what I want to know or is my answer really that bad that I get so much downvotes? A common use to install PHP is like that:

./configure --prefix=/usr/share/php5\
 --with-libdir=lib64\
 --includedir=/usr/include\
 --enable-libxml\
 --enable-session
[...]

I didn't installed the current PHP5.2 on the server so I don't know how it was configurated during installation and I need/want to know what were the settings to install PHP5.3 like the current 5.2 to have a high chance to get all my websites working without any trouble.

Answer 1

You've said that your output from phpinfo() / php -i doesn't have a Configure Command section. Can you post the output of php -i | head -n 10 ?

EDIT:

Based on your comment that states PHP Version => 5.2.4-2ubuntu5.23, it seems you're running Ubuntu. I found the list of which versions of Ubuntu include which version of PHP here, which implies you're running Hardy Heron. I found details of the particular source package here, and the upload date corresponds to the build date that you see in your output of php -i. Since you're running a 64-bit version of the package, the complete Ubuntu buildlog can be found here (warning: LONG). Scrolling through that you can find the configure commands for the apache2 build on line 1815, the cgi build on line 6170 and the cli build on line 9164. To save you some scrolling, here's the command for the apache2 build (i.e. the package libapache2-mod-php5):

    CFLAGS="-O2 -Wall -fsigned-char -fno-strict-aliasing   -gstabs" PROG_SENDMAIL="/usr/sbin/sendmail" ../configure \
    --prefix=/usr --with-apxs2=/usr/bin/apxs2 \
    --with-config-file-path=/etc/php5/apache2 \
    --with-config-file-scan-dir=/etc/php5/apache2/conf.d \
    --build=x86_64-linux-gnu --host=x86_64-linux-gnu --mandir=/usr/share/man --enable-memory-limit --disable-debug --with-regex=php --disable-rpath --disable-static --with-pic --with-layout=GNU --with-pear=/usr/share/php --enable-calendar --enable-sysvsem --enable-sysvshm --enable-sysvmsg --enable-track-vars --enable-trans-sid --enable-bcmath --with-bz2 --enable-ctype --with-db4 --without-gdbm --with-iconv --enable-exif --enable-filepro --enable-ftp --with-gettext --enable-mbstring --with-pcre-regex=/usr --enable-shmop --enable-sockets --enable-wddx --with-libxml-dir=/usr --with-zlib --with-kerberos=/usr --with-openssl=/usr --enable-dbx --enable-soap --enable-zip --with-mime-magic=/usr/share/file/magic.mime --with-exec-dir=/usr/lib/php5/libexec --with-system-tzdata \
    --without-mm \
    --with-curl=shared,/usr \
    --with-zlib-dir=/usr \
    --with-gd=shared,/usr --enable-gd-native-ttf \
    --with-gmp=shared,/usr \
    --with-jpeg-dir=shared,/usr \
    --with-xpm-dir=shared,/usr/X11R6 \
    --with-png-dir=shared,/usr \
    --with-freetype-dir=shared,/usr \
    --with-ttf=shared,/usr \
    --with-t1lib=shared,/usr \
    --with-ldap=shared,/usr \
    --with-ldap-sasl=/usr \
    --with-mhash=shared,/usr \
    --with-mysql=shared,/usr \
    --with-mysqli=shared,/usr/bin/mysql_config \
    --with-pspell=shared,/usr \
    --with-unixODBC=shared,/usr \
    --with-recode=shared,/usr \
    --with-xsl=shared,/usr \
    --with-snmp=shared,/usr \
    --with-sqlite=shared,/usr \
    --with-mssql=shared,/usr \
    --with-tidy=shared,/usr \
    --with-xmlrpc=shared \
    --with-pgsql=shared,/usr PGSQL_INCLUDE=`pg_config --includedir` \
    --enable-pdo=shared \
    --without-pdo-dblib \
    --with-pdo-mysql=shared,/usr \
    --with-pdo-odbc=shared,unixODBC,/usr \
    --with-pdo-pgsql=shared,/usr/bin/pg_config \
    --with-pdo-sqlite=shared,/usr \
    --with-pdo-dblib=shared,/usr