Blank Page while accessing admin/install.php

[venki]

Hi,

I am trying to use Tera-WURFL with Redhat Linux 5 and Apache 2.2 server with Mysql5. I am getting a blank page when i enter http://localhost/Tera-WURFL/admin/install.php in my browser and hence I am not able to install. The same php file worked in windows when i tried to install it. My php is working fine and apache is also configured correctly in the Linux. Please help.

Thanks,
Venki

[kamermans]

When you get a blank page in PHP it is almost always because there was a fatal error and your installation of php is configured to suppress errors. The fastest way to see what's wrong is to look at your webserver's error_log - do you have access to that? (maybe in /var/log/apache2/error.log or similar). Also, you should check to make sure you have the MySQLi extension loaded. If you're unsure how to check this, please let me know what distro of Linux you are using; or if you are using shared hosting, what admin panel you are using (cpanel, parallels/plesk, etc...)

EDIT: Sorry, I overlooked the fact that you are using Redhat EL5. Your error log is probably in /var/log/httpd/

[venki]

Hi,

I see the following errors in the log

[Thu Jun 03 14:26:54 2010] [error] [client 127.0.0.1] File does not exist: /var/www/php/favicon.ico
[Thu Jun 03 14:29:25 2010] [error] [client 127.0.0.1] PHP Fatal error: Class 'mysqli' not found in /var/www/php/Tera-WURFL/DatabaseConnectors/TeraWurflDatabase_MySQL5.php on line 477

Could you also tell me more about the MySQLi

Thanks,
Venki

[kamermans]

MySQLi is a PHP module that provides improved access to MySQL servers. On RedHat/Fedora/CentOS, the MySQLi module comes with the php-mysql. To install this, go to a Linux shell and run the following command:

Code: Select all

sudo yum install php-mysql


If it is already installed, then it's not enabled so please send me the output of this command:

Code: Select all

sudo grep -Ri mysqli /etc/php*


Here's some good info on MySQLi: http://us.php.net/manual/en/mysqli.overview.php

[venki]

The following were the o/p of both the commands

sudo yum install php-mysql

Loaded plugins: rhnplugin, security
There was an error communicating with RHN.
RHN support will be disabled.
Error communicating with server. The message was:

Error Message:
Please run rhn_register as root on this client
Error Class Code: 9
Error Class Info: Invalid System Credentials.
Explanation:
An error has occurred while processing your request. If this problem
persists please enter a bug report at bugzilla.redhat.com.
If you choose to submit the bug report, please be sure to include
details of what you were trying to do when this error occurred and
details on how to reproduce this problem.

Setting up Install Process
No package php-mysql available.
Nothing to do

sudo grep -Ri mysqli /etc/php*

;extension=php_mysqli.dll
[MySQLi]
; http://php.net/mysqli.max-persistent
mysqli.max_persistent = -1
; http://php.net/mysqli.allow_local_infile
;mysqli.allow_local_infile = On
; http://php.net/mysqli.allow-persistent
mysqli.allow_persistent = On
; http://php.net/mysqli.max-links
mysqli.max_links = -1
; http://php.net/mysqli.cache_size
mysqli.cache_size = 2000
; Default port number for mysqli_connect(). If unset, mysqli_connect() will use
; http://php.net/mysqli.default-port
mysqli.default_port = 3306
; http://php.net/mysqli.default-socket
mysqli.default_socket =
; http://php.net/mysqli.default-host
mysqli.default_host =
; http://php.net/mysqli.default-user
mysqli.default_user =
; Default password for mysqli_connect() (doesn't apply in safe mode).
; *Any* user with PHP access can run 'echo get_cfg_var("mysqli.default_pw")
; http://php.net/mysqli.default-pw
mysqli.default_pw =
mysqli.reconnect = Off

[kamermans]

Ok, it looks like it's not installed, can you run this command please?:

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locate *.so | grep mysqli


You should see something like this:

Code: Select all

# locate *.so | grep mysqli
/usr/lib/php/modules/mysqli.so


[kamermans]

By the way, the reason yum install php-mysql didn't work is because your copy of RedHat is not registered with the RedHat Network (RHN) - until you register it you will not be able to easily update/install new packages.

[kamermans]

Could you also run this? Based on the output I will provide you a link to download and install the correct php-mysql package for your system.

Code: Select all

rpm -q php && rpm -q php-mysql && uname -a && cat /etc/redhat-release


On one of my Fedora servers, this is the output, it should be similar for you:

Code: Select all

php-5.2.4-3
php-mysql-5.2.4-3
Linux *myhostname* 2.6.24.5-85.fc8 #1 SMP Sat Apr 19 12:39:34 EDT 2008 i686 i686 i386 GNU/Linux
Fedora release 8 (Werewolf)


[venki]

I am getting nothing for locate *.so | grep mysqli and for
rpm -q php && rpm -q php-mysql && uname -a && cat /etc/redhat-release
package php is not installed

But if i put a php file say test.php and enter http://localhost/test.php it runs perfectly

I did not install php as a rpm package i followed instructions from http://www.lamphowto.com/

[kamermans]

Interesting. Do you know what version of php you have? (you can run this from the shell: php -r 'echo PHP_VERSION."\n";')