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class example - factory method for input data
Objects in PHP example from a Well House Consultants training course
More on Objects in PHP [link]
Source code: rest004.php Module: H108
<?php
# class example - factory method for input data /* Separate out the logic that deals with the data format for objects of type table into a separate method WITHIN THE CLASS - that's the natural place for it. Learn about this - http://www.wellho.net/course/pofull.html */ class table { function __construct($w,$h,$name) { $this->wid = $w; $this->hei = $h; $this->name = $name; $this->seats = 2 * (floor($this->wid / 800) + floor($this->hei / 800)); } function getseats() { return $this->seats; } function getname() { return $this->name; } function getdoggie() { if ($this->wid > $this->hei) { return $this->hei / 2;} return $this->wid / 2; } static function factory($material) { $pieces = explode(" ",trim($material)); if (strpos($pieces[0] ,"#") > -1) { return False; } if (count($pieces) < 2) { return False; } $ww = array_shift($pieces); $hh = array_shift($pieces); $name = implode(" ",$pieces); $tabby = new table($ww,$hh,$name); return $tabby; } } // ------------------------------------------------- $restaurant = array() ; $fh = fopen("r4.txt","r"); while ($record = fgets($fh)) { $makes = table::factory($record); if ($makes) array_push($restaurant,$makes); } foreach ($restaurant as $rt) { $bums = $rt->getseats(); $called = $rt->getname(); $woof = $rt->getdoggie(); print ("We can seat $bums in $called. DD is $woof\n"); } /* Sample output munchkin:apr13 grahamellis$ php rest004.php We can seat 6 in Window. DD is 750 We can seat 4 in The Snug. DD is 500 We can seat 4 in The Snug. DD is 500 We can seat 4 in The Snug. DD is 500 We can seat 2 in The Staff Half. DD is 350 munchkin:apr13 grahamellis$ And the text file we used - note that our program accepts comment and blank lines in the data #%% This is my table test file 2000 1500 Window 1200 1000 The Snug 1200 1000 The Snug 1200 1000 The Snug 700 1500 The Staff Half */ ?> Learn about this subject
This module and example are covered on the following public courses:
* Object Oriented Programming in PHP * PHP Programming * Learning to program in PHP Also available on on site courses for larger groups Books covering this topic
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Other Examples
This example comes from our "Objects in PHP" training module. You'll find a description of the topic and some
other closely related examples on the "Objects in PHP" module index page.
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