On this day ... one PHP script with three uses

For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))

What happened on this day in previous years? What events in history, and what was the subject of this blog? As part of a demonstration (of caching), I wrote an example script that constructed a report ... but then I wanted to use it in various ways. As a demonstration page in its own right. As a text data feed available for use elsewhere. And as a file that can be included within other files.

In PHP, the header function lets you reset the MIME type that your script returns - the file extension you use only sets the default and that can be easily overridden.

Here's the code at the end of the demonstration which selects what to return, based on request parameters in the URL:

if (! $_REQUEST[silent]) {

  if ($_REQUEST[feed]) {

    header("Content-type: text/plain");

    print ($tout);

  } else {

?>

<html>

<head>

<title>On this day ...</title>

</head>

<body>

<h1>On this day ... what was I blogging and what happened 

in recent years?</h1>

<table cellpadding="4" border="0"><?= $hout ?></table>

</body>

</html>

<?php }} ?>

Here are examples of the three calls used:
  http://www.wellho.net/demo/onthisday.php [try]
  http://www.wellho.net/demo/onthisday.php?feed=100 [try]
  http://www.wellho.net/demo/onthisday.php?feed=100&silent=1 (No link - empty page!)

The final URL is an example of how the same page can be set up for use within another page on your website, via a PHP require or include. I have used it to generate data fo fill in our standard template for an "on this day" page which you can visit [here] via the URL http://www.wellho.net/net/onthisday.html .
(written 2011-09-26, updated 2011-09-27)

Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles

H307 - PHP - Web2 and caching
  [1633] Changing a screen saver from a web page (PHP, Perl, OSX) - (2008-05-06)
  [1647] Exchange Rates - PHP with your prices in your users currency - (2008-05-19)
  [1733] memcached - overview, installation, example of use in PHP - (2008-08-02)
  [1812] Starting Ajax - easy example of browser calling up server data - (2008-09-27)
  [1813] Ajax - going Asyncronous and what it means - (2008-09-28)
  [1814] Javascript/HTML example, dynamic server monitor - (2008-09-28)
  [1926] Flash (client) to PHP (server) - example - (2008-12-06)
  [1995] Automated server heartbeat and health check - (2009-01-16)
  [2196] New Example - cacheing results in PHP for faster loading - (2009-05-24)
  [2321] Uploading and Downloading files - changing names (Perl and PHP) - (2009-08-04)
  [2545] Scraping content for your own page via PHP - (2009-12-21)
  [3029] PHP data sources - other web servers, large data flows, and the client (browser) - (2010-11-04)
  [3094] Setting your user_agent in PHP - telling back servers who you are - (2010-12-18)
  [3186] How to add a customised twitter feed to your site - (2011-02-27)
  [3955] Building up from a small PHP setup to an enterprise one - (2012-12-16)
  [3999] Handling failures / absences of your backend server nicely - (2013-02-08)
  [4055] Using web services to access you data - JSON and RESTful services - (2013-03-29)
  [4075] Further recent PHP examples - (2013-04-28)
  [4106] Web server efficiency - saving repetition through caches - (2013-05-30)
  [4136] How do I post automatically from a PHP script to my Twitter account? - (2013-07-10)
  [4627] Caching results in an object for efficiency - avoiding re-calculation - (2016-01-20)

Back to
Away to train - but still around by video for Melksham meetings

Previous and next
or
Horse's mouth home

Forward to
Catching the fishes first?

Some other Articles

Hangers, luggage and possessions
From flowchart to program - code design for the newcomer
Flying Colours!
Catching the fishes first?
On this day ... one PHP script with three uses
Away to train - but still around by video for Melksham meetings
Stepping stones - early coding, and writing re-usable code quickly
MySQL, MySQLi, PDO or something else - how best to talk to databases from PHP
Your PHP website - how to factor and refactor to reduce growing pains
Reading and using emails including enclosures on your web server.

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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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