Slackware 10, kernel 2.6.7

cant connect to mysql via php.

It returns nothing, no error messages nothing.

Trying to run an Imagegallery that worked fine on another server, On my server all php functions work except mysql, the script contains error messages. for example if it can´t connect to mysql server it should say cant connect.... but all I get is a blank page. :/

The default of the newer versions of PHP is to generate no errors/warnings whatsoever on the page, but instead log them to the server log file. This is the best set-up for a production server, but not for a testing server.

To (temporarily) turn error-reporting on so you can debug your mysql connection, open your php.ini file and set the following:
error_reporting = E_ALL
display_errors = On
Don't forget to set them back to their old values (if desired) when you're done.

Alternatively, you can check Apache's error log to see what exactly goes wrong with the mysql connection.

[Sun Nov 28 23:16:33 2004] [notice] Apache/1.3.32 (Unix) PHP/4.3.9 configured -- resuming normal operations
[Sun Nov 28 23:16:33 2004] [notice] Accept mutex: sysvsem (Default: sysvsem)
[Sun Nov 28 23:19:04 2004] [notice] caught SIGTERM, shutting down

that´s all it says

here´s some code

if (@mysql_query($sql)) {
echo 'Added comment<br><hr>';
} else {
echo 'It wasn´t possible to add any comments';
}

and it´s still just a blank page..... so there´s something really wrong here

Ok, what you're saying with the '@mysql_query' there, is: "execute the function "mysql_query" and suppress any notices, warnings and errors it might generate". Remove the '@' to see the errors. For more information about error control in PHP, see the PHP manual.

Yes indeed I´m a newbie and should read the manual, however I removed the @ in different places...

Call to undefined function: mysql_connect()

so it doesn´t seem to support mysql functions at all
it´s compiled with mysql so I really dont understand this

here´s the phpinfo output
Configure Command './configure' '--prefix=/usr' '--disable-static' '--with-apxs=/usr/sbin/apxs' '--sysconfdir=/etc' '--enable-discard-path' '--with-config-file-path=/etc/apache' '--enable-safe-mode' '--with-openssl' '--with-mhash' '--enable-bcmath' '--with-bz2' '--with-pic' '--enable-calendar' '--enable-ctype' '--with-gdbm' '--with-db3' '--with-imap-ssl=/usr/local/lib/c-client' '--with-imap=/usr/local/lib/c-client' '--enable-dbase' '--enable-ftp' '--with-iconv' '--with-exif' '--enable-exif' '--with-gd' '--enable-gd-native-ttf' '--with-jpeg-dir=/usr' '--with-png' '--with-gmp' '--with-mysql=shared,/usr' '--with-gettext=shared,/usr' '--with-expat-dir=/usr' '--with-xml' '--enable-wddx' '--with-mm=/usr' '--enable-trans-sid' '--enable-shmop' '--enable-sockets' '--with-regex=php' '--enable-sysvsem' '--enable-sysvshm' '--enable-yp' '--enable-memory-limit' '--with-tsrm-pthreads' '--enable-shared' '--disable-debug' '--with-zlib=/usr'

I found the solution here ->
http://www.vttoth.com/badmysql.htm

just had to add the extension_dir in php.ini ....