PHP

From Lankyland

PHP

Contents 1 Versions 2 Basic PHP Formating 3 Functions 3.1 Inbuilt Functions 3.2 Custom PHP Functions

Versions

Currently developing in PHP 5.2, have used PHP 4 previously.

Basic PHP Formating

All PHP needs to be within the PHP tags. <?php and ?> (<? are discouraged often)

Statements end with a ;

Functions

These functions are ones that I have found very useful. They include functions that come with PHP and also functions that have been written by developers. I will try to attribute the original authors when I can however I have been using some of these functions for so long I have lost the original author's details.

Inbuilt Functions

• date_default_timezone_set()
• date()
• phpinfo()

Custom PHP Functions

• daysBetweenDates() - calculates the number of days between two dates
• prettySize() - takes a file size in bytes and returns it in an easier to read format
• parse_urls() - parses a string and takes any URLs and turns them into hyperlinks
• Geotargeting - determining a users location based on IP Address
• printTime() - show what time it is in multiple locations