Get unique array values with PHP
The PHP function array_unique() allows you to create a new array which contains only the unique values from the original array. This post looks at some examples of using the array_unique function.
PHP
Information and howto articles for PHP
PHP is a powerful open source server-sided scripting language that can be used on a wide variety of operating systems and webservers, including Apache on UNIX and IIS on Windows.
PHP contains numerous extensions which enable you to dynamically create images and flash files, parse xml, connect to remote servers using pop, imap, ftp, http and raw sockets, natively access many database servers including PostgreSql, MySQL and Microsoft SQL Server, compress and decompress files, lookup domain names and and much more.
PHP has an excellent manual and online documentation which covers every function for every extension available.
phpMyAdmin
phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL using a web browser and is one of the most active projects on Sourceforge.
Splitting a large Apache log file with PHP
A little while back I needed to split a large Apache log file (3.5GB) up into smaller pieces and wanted to break it up into several files, with one for each day of the month. I initially tried using "grep" on the command line but this proved to be too slow, and I needed to run it once for each day and month so it was going to take 92 times to run, extracting just one day at a time over the course of three months. I ended up writing a quick little PHP script which was able to split the 3.5GB file into 92 files, one for each day of each month in under 4 minutes.
Errors Compiling PHP with Sablotron
When compiling PHP with Sablotron there are errors which prevent PHP from compiling. This article covers what you need to do to enable PHP to compile correctly with Sabloton.
PHP error Call to undefined function ImageCreateFromPNG
If you get the following error message in PHP then it means you need to have the PHP GD extension installed. Obviously the /path/to/file.php will be the actual path and filename of the PHP script the error occured in, and the line number will be the actual line.
Fatal error: Call to undefined function ImageCreateFromPNG() in /path/to/file.php on line 379
You’ll also get this error message using other functions such as ImageCreateFromJPEG() if the PHP GD library is not installed.
Process Forking with PHP
This article covers howto fork a child process using the PHP command line client and PHP process control functions. Several examples illustrate how to create child processes and make the parent wait until they have finished before continuing processing.