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Learning to program in PHP - Regular Expression and Associative Array examples

There's a lot to learn on a week-long PHP course - especially if you're new to programming. And delegates need practice during and after the course with some relatively straightforward (but rewarding) real applications. One of the things that we do ourselves is to analyse server log files - allowing for us to research and learn from the traffic arriving at out web site. Such data and feedback is important when you're considering search engine placement, and it's a rewarding application to write too as a short piece of code can tell you a very great deal. In the past, you might have used analog or AWStats for analysis like these. Nowadays many people use Google Analytics but some elements there have become paying services, and a "do it yourself" approach does let you fine tune at the grass roots too.

I've added two demonstrations to our web site from today. The first counts the number of accesses to each page in a log file, and reports on the 10 most visited - source code [here].

The second also shows reglar expressions and associative arrays, but I have extended it to look at the search terms used and report on each of those for the most arrived-at three pages. That's done using an array of arrays (you may consider that to be a two dimensional array if you wish, but really it isn't). And the source is commented - see [here]. You can also run that code (and it will look at accesses from 03:30 until the current time - live data) [here].

As ever, the really useful information can come in the trimmings, and I've added a link from each of the arrival pages into this last demo so that it forms a really useful too for your SEO team ... not bad for something written on the penultimate day of your first programming course!




Next PHP course - February 2012. Some places remain. Whether you're reading this article in time for the February course, or not, you can find full details of all our PHP courses and upcoming dates [here]. Courses are taught interactively so that you don't just see the programs - you see how they're developed too, and groups are limited to eight delegates to make sure that everyone gets plenty of help and tutor time if they need it. We even have our own hotel rooms if you're coming from a distance so you can stay with us!

(written 2011-12-01, updated 2011-12-03)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
H106 - PHP - Arrays
  [4244] Disambiguation - PHP List - (2014-03-07)
  [4072] Splitting the difference with PHP - (2013-04-27)
  [4068] Arrays in PHP - contain different and even mixed data types - (2013-04-24)
  [3379] Sorting data the way YOU want it sorted - (2011-08-05)
  [3004] Increment operators for counting - Perl, PHP, C and others - (2010-10-18)
  [2920] Sorting - naturally, or into a different order - (2010-08-14)
  [2915] Looking up a value by key - associative arrays / Hashes / Dictionaries - (2010-08-11)
  [2274] PHP preg functions - examples and comparision - (2009-07-08)
  [2215] If nothing, make it nothing. - (2009-06-02)
  [1614] When an array is not an array - (2008-04-17)
  [1451] More PHP sample and demonstration programs - (2007-12-01)
  [1199] Testing for one of a list of values. - (2007-05-22)
  [1116] PHP adding arrays / summing arrays - (2007-03-23)
  [832] Displaying data at 5 items per line on a web page - (2006-08-14)
  [773] Breaking bread - (2006-06-22)
  [603] PHP - setting sort order with an associative array - (2006-02-13)
  [409] Functions and commands with dangerous names - (2005-08-11)

H107 - String Handling in PHP
  [4071] Setting up strings in PHP - (2013-04-27)
  [3790] Solution looking for a problem? Lookahead and Lookbehind - (2012-06-30)
  [3789] More than just matching with a regular expression in PHP - (2012-06-30)
  [3788] Getting more than a yes / no answer from a regular expression pattern match - (2012-06-30)
  [3516] Regular Expression modifiers in PHP - summary table - (2011-11-12)
  [3515] PHP - moving from ereg to preg for regular expressions - (2011-11-11)
  [3424] Divide 10000 by 17. Do you get 588.235294117647, 588.24 or 588? - Ruby and PHP - (2011-09-08)
  [3020] Handling (expanding) tabs in PHP - (2010-10-29)
  [2629] Curly braces within double quoted strings in PHP - (2010-02-09)
  [2238] Handling nasty characters - Perl, PHP, Python, Tcl, Lua - (2009-06-14)
  [2165] Making Regular Expressions easy to read and maintain - (2009-05-10)
  [2046] Finding variations on a surname - (2009-02-17)
  [1799] Regular Expressions in PHP - (2008-09-16)
  [1613] Regular expression for 6 digits OR 25 digits - (2008-04-16)
  [1603] Do not SHOUT and do not whisper - (2008-04-06)
  [1533] Short and sweet and sticky - PHP form input - (2008-02-06)
  [1372] A taster PHP expression ... - (2007-09-30)
  [1336] Ignore case in Regular Expression - (2007-09-08)
  [1195] Regular Express Primer - (2007-05-20)
  [1058] PHP Regular expression to extrtact link and text - (2007-01-31)
  [1008] Date conversion - PHP - (2006-12-26)
  [728] Looking ahead and behind in a Regular Expression - (2006-05-22)
  [716] Evaluating arithmetic expressions in configuration files - (2006-05-10)
  [642] How similar are two words - (2006-03-11)
  [608] Don't expose your regular expressions - (2006-02-15)
  [589] Robust PHP user inputs - (2006-02-03)
  [574] PHP - dividing a string up into pieces - (2006-01-23)
  [560] The fencepost problem - (2006-01-10)
  [558] Converting between acres and hectares - (2006-01-08)
  [493] Running a Perl script within a PHP page - (2005-11-12)
  [463] Splitting the difference - (2005-10-13)
  [422] PHP Magic Quotes - (2005-08-22)
  [337] the array returned by preg_match_all - (2005-06-06)
  [54] PHP and natural sorting - (2004-09-19)
  [31] Here documents - (2004-08-28)


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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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