Make single Roundcube instance use multi different databases

I had to configure webmail service with Roundcube which would allow connecting multi mail servers o one platform. Every mail server had it’s own Roundcube instance already, but idea was, that only one installation can handle all mail servers.

I found out, that this can be done pretty symple with some php in roundcube configuration.

Open your roundcube configuration file, for example:

vi /var/www/roundcube/config/config.inc.php

Fetch correct hostname for specific webmail instance in php variable. 

$host = $_SERVER['SERVER_NAME'];

Then you should create switch statement that will be able to manage correct database connection and host for specific server name – mail service. You can also have different types of database. For example mysql and postgres.

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Disable OPcache for specific PHP script. Exclude from OPcache.

Sometimes accelerating with opcache can cause some problems with your application scripts. In those cases, when your script shouldn’t be accelerated, you can specify those scripts with opcache’s blacklist which will exclude this files from acceleration. Example bellow is done on CentOS 7.

First, find configuration file for your opcache php extension. You can do something like this:

[root@meow php.d]# php -i | grep opcache | grep ini
Additional .ini files parsed => /etc/php.d/10-opcache.ini,

Open 10-opcache.ini and you should see something like bellow. Path to opcache’s blacklist file.

; The location of the OPcache blacklist file (wildcards allowed).
; Each OPcache blacklist file is a text file that holds the names of files
; that should not be accelerated.
opcache.blacklist_filename=/etc/php.d/opcache*.blacklist

Close 10-opcache.ini and open file named opcache-default.blacklist which should be in same directory. If not, create one. This file will contain a list of php scripts which should be ignored by opcache. 

[root@meow php.d]# cat opcache-default.blacklist
; The blacklist file is a text file that holds the names of files
; that should not be accelerated. The file format is to add each filename
/path/to/ignored/script/ignoreThis.php
/path/to/another/ignored/script/ignoreThisToo.php
...

Get list of mass/multi domain redirects with CURL

I had large list of domains for which I had to check to which location are they pointing/redirecting. Curl is best option for this kind of work. To save some time, I wrote this simple one liner which will do that for you.

First, create txt file which will contain list of all domains that you want to check. For this example I will create domains.txt. 

Then, run this command – replace file name with yours.

> $ for i in `cat domains.txt`; do echo -n "$i -> "; curl -I -s -L -o /dev/null -w %{url_effective} -o /dev/null $i; echo "\t"; done

This will give you domain name with location to which it’s redirecting:

domain1.com -> https://www.domain1.com/sl 
domain1.de -> https://www.domain1.com/de 
domain2.si -> http://domain2.si/si 
example.com -> https://www.example.com/
lalala.es -> https://www. lalala.es/spain 
bash.com -> https://www.bash.com/i/love
...

Magento: PHP Fatal error – Allowed memory size exhausted when bin/magento module:status

This was strange one. When calling simple magento command with PHP CLI I was getting error that allowed memory size was exhausted.

[root@machine ~]# php bin/magento module:status
[root@machine ~]# PHP Fatal error: Allowed memory size of 2097152 bytes exhausted (tried to allocate 32768 bytes) in /path/to/wwww/magentoshot.com/vendor/symfony/console/Application.php on line 951

I checked php.ini and it was set like this:

memory_limit = 2048M

I checked if there are different values for CLI version. It were the same.

Solution was simple. Change your php.ini value for memory_limit and define it in gigabytes instead in megabytes.

memory_limit = 2G

I restarted Apache and it started to work.

Magento – Fatal error: Class Mage not found

Of corse, this can be caused by many different things, but if you’re stuck, without any ideas what could be wrong, than try solution bellow. Compiler stores everything in one file and can cause problems with includes. Just clear compiler and disable it if you don’t need it of corse.

I was getting error like this:

Warning: include(Mage.php): failed to open stream: No such file or directory in /my/web/server/root/public_html/lib/Varien/Autoload.php on line 94 Warning: include(): Failed opening 'Mage.php' for inclusion (include_path='/my/web/server/root/public_html/app/code/local:/my/web/server/root/public_html/app/code/community:/my/web/server/root/public_html/app/code/core:/my/web/server/root/public_html/lib:.:/usr/local/share/pear') in /my/web/server/root/public_html/lib/Varien/Autoload.php on line 94 Fatal error: Class 'Mage' not found in /my/web/server/root/public_html/app/code/core/Mage/Core/functions.php on line 244

Just login into your shell and then execute commands bellow (without comments):

//clear compiler
php compiler.php clear
//disable compiler
php compiler.php disable

It is most likely that this will fix your problem. If not, keep digging 🙂

Hope it helps.

Alpine PhotoTile for Instagram not showing images

If you’re using this WordPress plugin to show Instagram images gallery on your site, and you noticed that images don’t show anymore, chances are, that this is due to deprecated PHP function ereg_replace. recently I upgraded my PHP version to 7.1 and this plugin stopped working. So, if you upgraded your PHP, this is almost certain the cause of problem. There is how to fix this.

Error log was showing this:

2017/02/11 11:31:40 [error] 18865#18865: *4616 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Uncaught Error: Call to undefined function ereg_replace() in /path/to/site/public_html/wp-content/plugins/alpine-photo-tile-for-instagram/gears/alpinebot-display.php:58

So, open alpinebot-display.php with your favorite text editor and go to line where error is – in this case 58. Just replace ereg_replace with preg_replace and it should work again.

Hope it hepls.

WHMCS – can’t add new tld to domains

I found this odd issue with WHMCS billing platform. I wanted to add new tld to our domain pricing list, but when I clicked on Save Changes I’ll get notice that tld was added, but it wasn’t on domain list.

Just add/edit this in your php configuration – php.ini (default value is 1000):

max_input_vars = 5000

PHP: SSL operation failed with code 1

If you installed PHP 5.6 or grater and your application returns something like this:

SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL...

Then there is a simple fix for that. You can override default OpenSSL’s CA bundle with the one bellow.

  1. Download this cert bundle.
  2. Add this line to your php.ini file 
    openssl.cafile=/path/to/your/downloade/cacert.pem
  3. Restart apache/nginx and you should be ok.

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