preg_match date time validation

While developing a custom module, I needed to validate the following date time format:

1987-11-22T23:52:12

The following code was used to create a pattern for the preg_match and to test the results. (Can be used as is.)

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Show taxonomy terms Grouped By Taxonomy Parent

Lately I was assigned with the task to display all terms assigned to a node, grouped by their parent. To better explain this, let's say for example that we have the Vocabulary 1 assigned to Content Type A, with the following terms:

Parent 1

-- term 1

-- term 2

-- term 3

Parent 2

-- term 4

-- term 5

Parent 3

-- term 6

-- term 7

etc.

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Show Blocks only on user's pages and not on login, edit etc. pages

If we need to display a block in user pages, and not in /user/login or /user/register etc pages, we need to field in some custom php code under the Page specific visibility settings, we select the radio "Show if the following PHP code returns TRUE (PHP-mode, experts only)" and we fill in the following code:

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PHP Fatal error: Class 'Console_Table' not found in... drush error

After a fresh drush installation, drush status returned this error message:

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How to install drush

In this example, we will install drush under the directory /usr/local/share/. The path is not really important as long as you adjust the following commands accordingly. If the directories do not exists, we create them:


sudo mkdir /usr/local/share/
sudo mkdir /usr/local/bin/

And now it time to download and extract drush. Make sure that you have the latest version available and replace the url in the command accordingly. We also create a symlink so that we can use it everywhere without typing the parent path all the time...

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Views: Display all nodes that have sibling terms (i.e. terms under the same parent) .

While working on an extra requirement for metalera.gr, we needed to do the following:

When viewing node/xxx, we would like to display all nodes that have terms that belong to the same parent as the one we currently visit. Let's say for example, that we have the following parent:

Colors

--red

--blue

--green

Node/xxx has the term green assigned. We need our view to display all nodes that have red or blue as well.

To achieve that, we first create a new view, then:

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Views: How to exclude current node from output

In Drupal 6 there is a very easy way to exclude the current node from the views output.

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How to create divs with rounded corners, using only a lightweight circle graphic and a combination of xHTML/CSS

* Create a square image depicting a circle, using as a side double the radius of the desired round corners' width(You can do that with any image editor, i.e. mspaint). We 'll use 16px radius for our corners in our example, thus we'll be needing a square image 32x32 pixels depicting a circle(with a radius of 16px obviously), with the same border/backround color combination, as the divs we'll inclose.

i.e. -> http://img137.imageshack.us/img137/3000/circleq.png

CSS Code:

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How to install APC & Uploadprogress on Centos 5

First things first, we need the pecl command in order to download and install APC from the repositories. Let's run the following command in our terminal:

yum install php-pear

Then, we are making availlable a required package for the phpize command:

yum install php-devel

The followng package will allow apxs command:

yum install httpd-devel

Once we have all the above pakages installed, we are ready to install apc by running the pecl command:

pecl install apc

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Configure: error: Please reinstall the libcurl distribution

While trying to setup nginx web server, I received the following error on compilation of php from source: Configure: error: Please reinstall the libcurl distribution As it turns out, curl-devel was not installed. So after installing that, the problem was fixed. For CentOS:

yum -y install curl-devel

Note: More might be missing - if so try installing:

yum install freetype-devel libpng-devel libjpeg-devel libpng libjpeg t1lib  libc-client-devel  libmcrypt-devel gmp-devel mysql-devel

Also check:

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