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Extra PHP Examples

Yesterday evening and this morning, I was helping with some specific PHP questions ... resulting in some new examples that I've put on the web site.

• A program which can be used / allows logins only between 3pm and 5pm on a Wednesday afternoon (and could easily be adapted to let people in at breakfast time on Fridays instead)
Demo and source

• A simple session demonstration, which allows and controls logins ... if you log in with user name "terry" and password "trotter" you can try it out.
Demo and source code for main page and source code for form generator

echo in PHP • And finally, and example of how you should (and Should NOT) echo large chunks of HTML from your PHP program ... I feel really sad when I see a book with loads of echo statements all down one side of the example, when a "here document" or an exit from PHP mode would be so much cleaner. The illustration is photographed from one of the books in our library, and shows the way constant text output should NOT be done. It makes my toes curl!
Run the code and see the source

Aside from these examples, I've added two more articles that relate to the session - the first is about how to set up a MySQL database through PHP and the second covers those vital ancillaries such as Usability, maintainability, and keeping the user in mind.

There is a lot - an awful lot - more to PHP that just this sprinkling of issues - these are just the ones that have come up in the last 24 hours, and for one particular person. If you're new to PHP, have a look at our PHP course; if you've got some PHP background but want to go further making real use of the power of the language, consider our PHP techniques workshop instead.

(written 2009-03-09, updated 2009-03-10)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
H999 - Additional PHP Material
  [4655] Image indexer / thumbnail display scripts in PHP - (2016-02-25)
  [3210] Catchable fatal error in PHP ... How to catch, and alternative solutions such as JSON - (2011-03-22)
  [3118] Arrays of arrays - or 2D arrays. How to program tables. - (2011-01-02)
  [2684] Exception handling in PHP - (2010-03-18)
  [2215] If nothing, make it nothing. - (2009-06-02)
  [1623] PHP Techniques - a workshop - (2008-04-26)
  [1519] Flipping images on your web page - (2008-01-26)
  [1505] Script to present commonly used images - PHP - (2008-01-13)
  [1485] Copyright and theft of images, bandwidth and members. - (2007-12-26)
  [1451] More PHP sample and demonstration programs - (2007-12-01)
  [1391] Ordnance Survey Grid Reference to Latitude / Longitude - (2007-10-14)
  [1390] Converting from postal address to latitude / longitude - (2007-10-13)
  [1389] Controlling and labelling Google maps via PHP - (2007-10-13)
  [1270] PHP Standalone - keyboard to screen - (2007-07-18)
  [1194] Drawing hands on a clock face - PHP - (2007-05-19)
  [1104] Drawing dynamic graphs in PHP - (2007-03-09)
  [1053] Sorting people by name in PHP - (2007-01-26)
  [1020] Parallel processing in PHP - (2007-01-03)
  [1010] Dates, times, clickable diarys in PHP - (2006-12-28)
  [937] Display an image from a MySQL database in a web page via PHP - (2006-11-22)
  [917] Syntax checking in PHP - (2006-11-07)
  [839] Reporting on the 10 largest files or 10 top scores - (2006-08-20)
  [822] PHP - a team member leaves - (2006-08-04)
  [806] Check your user is human. Have him retype a word in a graphic - (2006-07-17)
  [789] Hot answers in PHP - (2006-07-02)
  [687] Presentation, Business and Persistence layers in Perl and PHP - (2006-04-17)
  [665] PHP Image viewing application - (2006-04-01)
  [603] PHP - setting sort order with an associative array - (2006-02-13)
  [563] Merging pictures using PHP and GD - (2006-01-13)
  [493] Running a Perl script within a PHP page - (2005-11-12)
  [483] Double Dollars in PHP - (2005-11-02)
  [468] Stand alone PHP programs - (2005-10-18)
  [372] Time calculation in PHP - (2005-07-08)
  [337] the array returned by preg_match_all - (2005-06-06)
  [322] More maps - (2005-05-23)
  [320] Ordnance Survey - using a 'Get a map' - (2005-05-22)
  [239] What and why for the epoch - (2005-03-08)
  [54] PHP and natural sorting - (2004-09-19)


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Why put Apache httpd in front of Apache Tomcat
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Weekday or Weekend PHP, Python and Perl classes?
Extra PHP Examples
Copyright, Portability and other nontechnical web site issues
Setting up a MySQL database from PHP
Converting to Perl - the sort of programs you will write
Efficient calls to subs in Perl - avoid duplication, gain speed
Playing Catchup
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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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