Hi. I have just compiled the latest php4 on an ubuntu Plesk hardy server.
It already had the distro's version of PHP - (PHP 5.2.4-2ubuntu5.4 with Suhosin-Patch 0.9.6.2), I installed PHP4 from source. The idea being so that if apache calls a .php5 page it gets parsed by php5 - normal .php pages to go to php4. It compiles fine and can run both from command line. Also I can run either of them fine - i,e php4 OR php5 - however as soon as I load BOTH modules (i.e no extra configuration) I get a segfault. i.e loading any ONE php module is fine........ cli output:- php5 : php -v PHP 5.2.4-2ubuntu5.4 with Suhosin-Patch 0.9.6.2 (cli) (built: Nov 25 2008 22:10:31) Copyright (c) 1997-2007 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies php4 : usr/local/bin/php -v PHP 4.4.9 (cli) (built: Dec 16 2008 15:25:01) Copyright (c) 1997-2008 The PHP Group Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies I get this in apache's error log [Tue Dec 16 15:50:22 2008] [notice] Apache/2.2.8 (Ubuntu) mod_python/3.3.1 Python/2.5.2 PHP/5.2.4-2ubuntu5.4 with Suhosin-Patch mod_ssl/2.2.8 OpenSSL/0.9.8g PHP/4.4.9 mod_perl/2.0.3 Perl/v5.8.8 configured -- resuming normal operations [Tue Dec 16 15:50:28 2008] [notice] child pid 1611 exit signal Segmentation fault (11) I complied php4 with ./configure --prefix=/usr/local --sysconfdir=/etc/php4 --with-config-file-path=/etc/php4 --with-config-file-scan-dir=/etc/php4/php.d --with-pic --with-pear --with-bz2 --with-curl=/usr/include/ --with-freetype-dir=/usr --with-png-dir=/usr --enable-gd-native-ttf --with-gdbm --with-gettext --with-jpeg-dir=/usr --with-gmp --with-openssl=/usr --with-png-dir --with-gd --with-libexpat-dir=/usr/ --with-zlib --with-layout=GNU --enable-exif --enable-magic-quotes --enable-sockets --enable-sysvsem --enable-sysvshm --enable-calendar --with-apxs2=/usr/bin/apxs2 --with-gd --with-libxml-dir=/usr/include/libxml2 --enable-zip --enable-bcmath -with-gdbm --with-mcrypt=/usr/ --enable-shared --disable-ipv6 --with-imap --with-imap-ssl --with-kerberos --enable-zip --enable-dba --enable-mime-magic --enable-ctype --with-system-tzdata --enable-soap --enable-ftp --enable-mbstring --enable-zend-multibyte --with-mysql=/usr --enable-sysvmsg --with-layout=GNU --disable-rpath --enable-shmop --with-exec-dir=/usr/lib/php4/libexec --with-iconv --enable-wddx --enable-dbx I load the modules with LoadModule php4_module /usr/lib/apache2/modules/libphp4.so LoadModule php5_module /usr/lib/apache2/modules/libphp5.so Has anyone got any ideas how to stop apache segfaulting - i.e is it simply some config or do i need to recompile ? As previously mentioned php4 and php5 work 100% o.k seperately