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Codeignign source page and error 500 in apache log?

Yesterday I spent more than 5 hours trying to figure out what happened to my setup. In the ci213 / application / controllers and views directories, I have a simple site.php and test.php controller. I do not understand why this site is not loading. Anyone have any suggestions on what I could look for next? Maybe it works correctly? If I could improve log errors, with which I could work more.

I decided that this should be something with codeigniter, since I have index.php and index.html in apache root (/ var / www), as well as index2.php on root sites (/ var / www / vhosts / srp-local / htdocs) when I go to localhost / index. (php | html) or srp-local / index2.php, pages load and display correctly, so php and apache work.

Trying to load the site, I get a blank page, so I decided that it should be something with CI. I close all log files, and the only one who receives the update is access.log with the following error.

127.0.0.1 - - [23/Mar/2013:09:00:28 -0600] "GET / HTTP/1.1" 500 381 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0"

config.php

 $config['base_url'] = 'http://srp-local/'; # My hosts file is configured for this. $config['log_threshold'] = 4; $config['log_path'] = '/var/www/vhosts/srp-local/logs/ci_error.log';

Controllers / site.php

 <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class Site extends CI_Controller { public function index() { $this->load->view('test'); } }

view / test.php

 <html> <head> </head> <body> <?php echo "PHP is working and the 'test' view was loaded"; ?> </body> </html>

Apache root

 /var/www/vhosts $ ll drwxrwsr-x 6 krizzo www-data 4096 Mar 22 10:45 it355 drwxrwsr-x 6 krizzo www-data 4096 Mar 22 17:45 srp-local

htdocs is webroot for srp-local, and index.php refers to the ci213 folder.

 /var/www/vhosts $ ll srp-local/ drwxrwsr-x 2 krizzo www-data 4096 Mar 22 17:06 cgi-bin drwxrwsr-x 4 krizzo www-data 4096 Mar 22 17:14 ci213 drwxrwsr-x 2 krizzo www-data 4096 Mar 22 17:19 logs drwxrwsr-x 5 krizzo www-data 4096 Mar 22 17:26 htdocs

All log locations / permissions

 /var/log/apache2/ -rw-rw-rw- 1 www-data adm 0 Mar 23 08:52 php_errors.log -rw-r----- 1 root adm 12191 Mar 23 09:32 access.log -rw-r----- 1 root adm 4858 Mar 23 09:32 error.log /var/www/vhosts/srp-local/logs/ -rw-r--r-- 1 root www-data 3227 Mar 22 19:42 error.log -rw-rw-r-- 1 krizzo www-data 0 Mar 23 09:37 ci_error.log -rw-r--r-- 1 root www-data 12983 Mar 23 09:38 access.log

Php.ini file settings

 error_reporting = E_ALL & ~E_DEPRECATED log_errors = On error_log = /var/log/apache2/php_errors.log
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7 answers

I finally found what was pointing me in the right direction. These two posts mentioned how CI uses @ in the database module, which may be the cause of this problem.

php returns 500 errors but no error log
CodeIgniter Project Loads Blank Web Page

I turned off the automatic loading of the database module, and the site is working. Now I just need to find out the database error that I am getting, which could lead to a CI failure. I will update this answer when I find out.

Update: I checked the account / password and access to the database, everything worked. The problem was that the php mysql driver was not installed. This is my first time I really used the Ubuntu system, and I thought that the mysql driver would be installed with the default php package, which I was wrong about.

After installing php5-mysqlnd and turning on the database library in CI startup, everything works correctly. The fact that I did not get any errors really makes me consider changing the frameworks.

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Doing this, just in case, it will help someone ... If you are on a shared hosting platform and do not have access to directories other than where you should place your files: the trick was to make php throw all errors even if apache failed.

Open "index.php", which is located in the root folder of your codeigniter installation;

 define('ENVIRONMENT', 'development'); if (defined('ENVIRONMENT')) { switch (ENVIRONMENT) { case 'development': error_reporting(E_ALL); /*added line below*/ ini_set('display_errors', '1'); break; ......

The implementation of the above change immediately began to show what was wrong with the code, and I was able to fix it and start and run.

Remember to indicate that your codeigniter environment is “production” as soon as you commit.

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Here is another reason why errors may not be visible:

I had the same problem. In my case, I copied the source from the production environment. Therefore, the ENVIRONMENT variable defined in index.php was set to 'production' . This made error_reporting set to 0 (no registration). Just set it to 'development' and you should start seeing error messages in the apache log.

It turned out that 500 due to the lack of a colon in the database configuration :-)

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In my case (basket class) it was a url question, look

 /var/log/apache2/error.log

if you have something like

 [client 127.0.0.1] File does not exist: ...

Then you must prefix your class name with '/index.php/' as follows

 http://localhost/codeigniter/index.php/cart
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I also struggled with this problem.

On my new server, I did not have the php mb_string module php mb_string .

yum install php-mbstring and then service httpd restart

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in my case, the error did not appear because the display errors in the php setup were not set to the active state. After setting it to the active php error, a problem was displayed that caused the 500 error.
Display error

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I checked the php version that was 7.0.xx, so I downgraded to php 5.6.xx and used the following steps to get it working for me.

 sudo a2dismod proxy_fcgi proxy; sudo service apache2 restart sudo add-apt-repository ppa:ondrej/php sudo apt-get update sudo apt-get install php7.0 php5.6 php5.6-mysql php-gettext php5.6-mbstring php-mbstring php7.0-mbstring php-xdebug libapache2-mod-php5.6 libapache2-mod-php7.0
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