Kevin Bradwick

Calculating the radius of a coordinate using PHP

Sometimes you’ll want to get the radius of a location. For this I have written a function that I’ll share with you.
/*

Copyright 2009 Kevin Bradwick (http://www.kevinbradwick.co.uk)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version [...]

How to install LibSSH2 on a CentOS 5 system

Libssh2 is a C library implementing the SSH2 protocol for PHP. Here’s how to get it installed on a CentOS system running PHP 5.1.6.
First step is to install some dependencies.

yum install automake php-devel libtool openssl-devel gcc++ gcc

Next, let’s download the latest release of libssh2 (1.2.2 at time of writing), unpack and install

# cd /tmp
# wget [...]

Accessing a timezone list in PHP

The php function timezone_identifiers_list is only available in newer versions of PHP (typically 5.2+), although the php site suggests it is available in versions 5.1.0+. If you have CentOS (current version 5.4) or another linux distro that has 5.1.6 or similar, you may find the function does not exist.
For these situations, I have compiled a [...]