Get only letters from string

<?php

preg_replace( '/[^a-z][A-Z]/', '', $stringOfText )

Regex – ignore white space

You can stick optional whitespace characters s* in between every other character in your regex. Although granted, it will get a bit lengthy.

See this for details

Case sensitive

On regex string add /i for case insensitive or /s for case sensitive.

For example:

[php]

$regex_match = "/(iPhone|iPod|BlackBerry|Palm|Googlebot-Mobile|mobile|mobi|Windows Mobile|Safari Mobile|Mobile Safari|Android|Opera Mini)/s";

[/php]

and for case insensitive:

[php]

$regex_match = "/(ipad|android|android 3.0|xoom|sch-i800|playbook|tablet|kindle|Safari)/i";

[/php]

Hope it helps!

Detect Mobile by Regex

Mobile phones:

iPhone|iPod|BlackBerry|Palm|Googlebot-Mobile|mobile|mobi|Windows Mobile|Safari Mobile|Mobile Safari|Android|Opera Mini

Tablets:

ipad|android|android 3.0|xoom|sch-i800|playbook|tablet|kindle|Safari

 

Old oku settings:

Configuration->Design->Default Cofig:

Current Package Name – Current Package Name

Templates, Skin (Images / CSS), Layout, Default: modern

iPhone|iPod|BlackBerry|Palm|Googlebot-Mobile|mobile|mobi|Windows Mobile|Safari Mobile|Mobile Safari|Android|Opera Mini – toku

ipad|android|android 3.0|xoom|sch-i800|playbook|tablet|kindle|Safari – modern

Get only numbers from string

preg_replace ( '/[^0-9]/', '', $stringOfText )