Hi, My current php installation (version 4.3.9) was built with GD: --with-gd=shared --enable-gd-native-ttf --without-gdbm but when I try to use any GD functions I get: PHP Fatal error: Call to undefined function: imagefontheight() GD is installed on my system (Linux Centos 4.3), as indicated by yum, and by the fact that Webmin uses it. I have tried loading it as an extension, by including the line extension=libgd.so in a file inside /etc/php.d, but it does not find that library. If I link /usr/lib/php4/libgd.so to the actual library file in /usr/lib/libgd.so.2, then it complains that the file is not a php extension library. I don't know what else to do, or what can be wrong. Any help will be greatly appreciated. get_loaded_extensions() gives: Array ( \[0] => yp [1] => xml [2] => wddx [3] => tokenizer [4] => sysvshm [5] => sysvsem [6] => standard [7] => sockets [8] => shmop [9] => session [10] => pspell [11] => posix [12] => pcre [13] => overload [14] => mime_magic [15] => iconv [16] => gmp [17] => gettext [18] => ftp [19] => exif [20] => dio [21] => dbx [22] => dba [23] => curl [24] => ctype [25] => calendar [26] => bz2 [27] => bcmath [28] => zlib [29] => openssl [30] => apache2handler [31] => mysql ) The complete ./configure options for php were: ./configure --build=i686-redhat-linux-gnu --host=i686-redhat-linux-gnu --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --cache-file=../config.cache --with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d --enable-force-cgi-redirect --disable-debug --enable-pic --disable-rpath --enable-inline-optimization --with-bz2 --with-db4=/usr --with-curl --with-exec-dir=/usr/bin --with-freetype-dir=/usr --with-png-dir=/usr --with-gd=shared --enable-gd-native-ttf --without-gdbm --with-gettext --with-ncurses=shared --with-gmp --with-iconv --with-jpeg-dir=/usr --with-openssl --with-png --with-pspell --with-xml --with-expat-dir=/usr --with-dom=shared,/usr --with-dom-xslt=/usr --with-dom-exslt=/usr --with-xmlrpc=shared --with-pcre-regex=/usr --with-zlib --with-layout=GNU --enable-bcmath --enable-exif --enable-ftp --enable-magic-quotes --enable-sockets --enable-sysvsem --enable-sysvshm --enable-track-vars --enable-trans-sid --enable-yp --enable-wddx --with-pear=/usr/share/pear --with-imap=shared --with-imap-ssl --with-kerberos --with-ldap=shared --with-mysql=shared,/usr --with-pgsql=shared --with-snmp=shared,/usr --with-snmp=shared --enable-ucd-snmp-hack --with-unixODBC=shared,/usr --enable-memory-limit --enable-shmop --enable-calendar --enable-dbx --enable-dio --enable-mbstring=shared --enable-mbstr-enc-trans --enable-mbregex --with-mime-magic=/usr/share/file/magic.mime --with-apxs2=/usr/sbin/apxs