Getting a file extensions from a PHP string is an important task on validating a file for a upload. For example if you have a file uploader which you only want to use for image uploads then you need to validate the file extension is of an image extension.
Here is a PHP function to get the extension of a string. It will explode the string on any “.” and get the last of the array.
Using query strings in PHP is a good way of transferring data from one file to another.
This is done by using the $_GET variable. This variable is a global variable that is used to get the content of the query string and allow you to get at this data as an array.
Read More →
Use the below PHP snippet to construct the current page URL.
It will find out if the URL is on a secure URL or not, gets the server name and port number if needed and the current page.
Read More →
If you are working on a web app that does things with colours then you could find it useful to have function to convert between different colour types.
Here is a PHP snippet which allows you to convert HEX colours to RGB colours.
Read More →
Here is a small PHP snippet to easily create a table in PHP.
First create the draw_table function.
Read More →
Stumbleupon is a great way of getting lots of visitors to your site. All you have to do is submit your pages to Stumbleupon and when people stumble in their chosen topic they will find your page. The more votes your pages get the more likely they are going to be seen.
If all you need is more people to vote for your pages then why not ask people to vote for your pages?
In a previous article you learnt how you can display the the author avatar in WordPress. But if you aren’t using WordPress then you will need to use a Gravatar.
Read More →
Having a user friendly URL is user important not just for SEO but also to help the visitors know that the website they are on is correct.
Read More →
Here is a quick PHP snippet that you can use to tell if the request coming to the page is from a form or from an Ajax request.
Where a page is being accessed by AJAX it will post data using XML, PHP can then pick up on the HTTP request and see what the return is expecting.
Read More →
Search engines index pages by the URL of the page, if these pages are moved to a different URL then the search engines will have indexed a page that no longer exists.
Read More →