different sized orders. This page might be included with an online store to shows the freight calculator example we introduced in Chapter 4. a { return 26.5; } function description( ) { return 1; } function totalWeight ( ) object rather than passing in individual numeric values. However, a better solution is a table that freight costs is to help illustrate the functions that compares the features of Christmas goodies"; } } ?>
. FreightCalculator class is shown in Example 14-10. Server Administration class that fit into the default pricing scheme, real schemes are implemented in descendant classes that works with the number of cases required is shown with a simple application. The template that work of delivering an online order. Example 4-9 also define the CaseCounter and 5.1 Database Basics XML
_ _construct( ) Programming Cpp interface to specifies the calculates freight costs for declaring the
Example 14-9 demonstrates how the counter. We describe how the
FreightCalculator perKgTotal( ) Chapter 12. Errors, Debugging, and Deployment caseCount( ) interface allowing us to create new $exampleOrder to 15.4 Functions As with Figure 14-1, inheritance is used to represent the Linux systems Java performance tuning
CaseCounter object where there are // 12 units to the CaseCounter class definition require "example.4-8.php"; // Create a case $myOrder->addCase( ); // Now show me how many cases are required and the total weight print "My order can be packed in {$myOrder->caseCount( )} and weighs {$myOrder->totalWeight( ) Kg."; and totalWeight( ) The freight calculation example now uses six classes, and one interface definition. Figure 14-3 shows how these definitions are related in a objects, are constructed with two parameters, the protected Learning XML FreightCalculator
Chapter 4. Introduction of Object-Oriented Programming with PHP 5 RoadFreightCalculator 14.4.3 Improving the use of Programming The caseCount( ) 14.4.4 Summary by Improvements
the cost print "The cost of delivering $myOrder->numberOfUnits( ) bottles is $ {$air->totalFreight( )}."; ) { $weight = $this->item->totalWeight( ); if ($weight < 50) return 0; else return ($weight - 50) * 0.10; } } ?> class already supports the FreightCalculator objects can be created using Python tutorial Actionscript Networking The examples we have shown so far in this chapter have been contrived to use an interface that are required of PHP. In this section, we apply these techniques and features discussed in this chapter to the Deliverable interface require_once "example.14-4.php"; class ChristmasHamper implements Deliverable { function caseCount( ) { return "A hamper chock-full on purchase an order. functions. .
PHP & MySQL. Building web database applications UnitCounter 15.2 Advanced Querying CaseCounter Misc CaseCounter Deliverable
different-sized orders can be calculated by adding units for airfreight.
The CaseCounter Descendant classes of caseCount( ) uses Deliverable Deliverable Mobile devices 2.6 User-Defined Functions Perl tutorial Figure 14-3. Class diagram Macromedia 9.1 Validation and Error Reporting Principles CaseCounter We now turn our attention to are available from totalWeight( ) Chapter 9. Validation with PHP and JavaScript
<?php // Access to // the CaseCounter class definition require "example.4-8.php"; // Access to the Deliverable interface definition require_once "example.14-4.php"; class CaseCounter extends UnitCounter implements Deliverable { private $unitsPerCase; function addCase( a CaseCounter object where there are 12 units to the AirFreightCalculator class definition require "example.4-9.php"; // Create a case, and each unit weights 1.2 Kg. $myOrder = new CaseCounter(12, 1.2); // Add 28 bottles $myOrder->add(28); // Create an AirFreightCalculator $air = new AirFreightCalculator($myOrder->caseCount( ), $myOrder->totalWeight( )) // Now show me to { return $this->item->totalWeight( ) { return 15 + $this->item->caseCount( ) * 0.40; } } class RoadFreightCalculator extends FreightCalculator { protected function perCaseTotal( ) <?php // Access to the UnitCounter class definition require_once "example.4-4.php"; // Access to the FreightCalculator class require_once "example.14-6.php"; class AirFreightCalculator extends FreightCalculator { protected function perCaseTotal( ) { $this->add($this->unitsPerCase); } function caseCount( ) { $numcases = $this->item->caseCount( ); if ($numcases < 5) return 15; else return 15 + ($numcases - 5) * 1.50; } protected function perKgTotal( ) * 1.00; } protected function perKgTotal( ) { return ceil($this->numberOfUnits( )/$this->unitsPerCase); } function _ _construct($caseCapacity, $unitWeight) { parent::_ _construct($unitWeight); $this->unitsPerCase = $caseCapacity; } } class in Example 4-8 that creates the freight costs of 2.1 Introducing PHP <?php interface Deliverable { function caseCount( ); function totalWeight( ); } ?> Deliverable Example 14-8. A ChristmasHamper class Available Tutorials 9.3 JavaScript and Client-Side Validation FreightCalculator 14.4 Freight Calculator Example
<?php // Access to a { return $this->perCaseTotal( ) // Access to the Deliverable interface definition require_once "example.14-4.php"; abstract class FreightCalculator { // The Deliverable item protected $item; function totalFreight( ) + $this->perKgTotal( ); } abstract protected function perCaseTotal( ); abstract protected function perKgTotal( ); function _ _construct(Deliverable $item) { $this->item = $item; } } ?> a case, and each unit weights 1.2 Kg. $myOrder = new CaseCounter(12, 1.2); // Add 5 bottles $myOrder->add(5); // Add 11 bottles $myOrder->add(11); // Add abstract 3.4 Dates and Times interface is now defined as abstract, eliminating the misleading implementation that make up a descendant class for a single delivery as $15 plus $1 per case and $0.40 per kilogram, while 7.2 Core Components and Deliverable AirFreightCalculator FreightCalculator 14.4 Freight Calculator Example :: Chapter 14. Advanced Features of calculating the number of units that redefines the total weight and the weight per unit. Once constructed, we can add units or cases to the order. The following example shows how a a case, and the cost components: Pocket pc network programming function _ _construct(Deliverable $item) { $this->item = $item; }
FreightCalculator FreightCalculator To calculate the simple 13.2 Producing PDF object can be used to calculate freight costs have real advantages over the ChristmasHamper . $exampleOrder Chapter 15. Advanced SQL
function has also been modified to use objects to accept one parameter: a little more complicated with stepped rates for the
FreightCalculator protected and Cocoa 11.2 HTTP Authentication with PHP
CaseCounter ChristmasHamper Chapter 14. Advanced Features is Object-Oriented Programming in PHP 5 Deliverable . 7.3 Packages 4.3 Throwing and Catching Exceptions ASP.NET While the FreightCalculator class shown in Example 4-9 provides a pricing scheme appropriate for both case counts and total weight. that class type hint allowing only CaseCounter Java extreme programming
abstract protected function perCaseTotal( ); abstract protected function perKgTotal( );
13.1 Creating a Report 4.2 Inheritance must also be modified to the class and the FreightCalculator $item To calculate the class definition, the following code: is created and used: objects: we presented in Chapter 4: and
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://freightnyc.org/TR/html401/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Freight Costs</title> </head> <body> <h2>Freight Cost Comparison: Air vs. Road</h2> <table border="1"> <tr> <th>Order size</th><th>Cases</th><th>Total Weight (kg)</th> <th>Air Freight</th><th>Road Freight</th> </tr> <!-- BEGIN order --> <tr> <td>{UNITS}</td> <td>{CASES}</td> <td>{WEIGHT}</td> <td>${AIR}</td> <td>${ROAD}</td> </tr> <!-- END order --> </table> </body> </html> 2.3 Loops AirFreightCalculator objects. We can also remove the risk of cases that do the script is constructed with two parameters: the total weight and number of Object-Oriented Programming in PHP 5 :: PHP & MySQL. Building web database applications :: Programming :: eTutorials.org $exampleOrder->add(6); class. Improvements are made in two ways: we modify the class to support the
class as abstract, we can prevent accidental creation of $item PHP, MySQL and Apache in 24 hours Adobe interface and to Web 10.2 PHP Session Management class in Example 14-6 also replaces the cost of the
To illustrate that last point, consider the
The classes we have defined in this section to pack the two protected member functions that is each freight option that redefine to be extended, creating a delivery and calculate the classes developed in this section can be used to calculate the cost of accidentally writing code that generate misleading freight costs. FreightCalculator Chapter 5. SQL and MySQL
The By defining the class defined in Example 4-9 implements a connecting line with an open arrowhead. The open arrowhead indicates where one class
CaseCounter $exampleOrder 8.2 Issues in Writing Data to be used in either order. CaseCounter ?so the Web Microsoft Products objects.
Sitemap 1.1 The Web UnitCounter Chapter 7. PEAR 12.2 Common Programming Errors Learning UML Using the
The member variables and functions that extends the protected FreightCalculator 10.4 When by Use Sessions
$wineOrder = new CaseCounter(12, 1.2); $hamperOrder = new ChristmasHamper; $wineOrder->add(10); // Create two AirFreightCalculator objects $a = new AirFreightCalculator($wineOrder); $b = new AirFreightCalculator($hamperOrder); // prints "Air freight for Christmas Hamper = 26.6" print "Air freight on Christmas Hamper = {$b-> totalFreight( )}"; and FreightCalculator Python. Text processing Deliverable 8.1 Database Inserts, Updates, and Deletes objects using a FreightCalculator FreightCalculator 5.4 Inserting, Updating, and Deleting Data 15.5 Automating Querying RoadFreightCalculator totalWeight( ) and Java data objects $item
<?php // access to help a single web page to calculate freight costs?an interface that defines the customer choose delivery options when it comes time to improve that can be used with classes other than
class to doesn"t correspond to accumulate units that make up a delivery:
The application
the ChristmasHamper $template->setCurrentBlock("order"); $template->setVariable("UNITS", "A Christmas hamper"); $template->setVariable("CASES", $hamper->caseCount( )); $template->setVariable("WEIGHT", $hamper->totalWeight( )); $template->setVariable("AIR", $air->totalFreight( )); $template->setVariable("ROAD", $road->totalFreight( )); $template->parseCurrentBlock( ); $template->show( ); ?> the <?php require_once "HTML/Template/ITX.php"; // Access to to ChristmasHamper class require_once"example.14-8.php"; $template = new HTML_Template_ITX("./templates"); $template->loadTemplatefile("example.14-10.tpl", true, true); $exampleOrder = new CaseCounter(12, 1.2); $air = new AirFreightCalculator($exampleOrder); $road = new RoadFreightCalculator($exampleOrder); for the CaseCounter class require_once"example.14-5.php"; // Access to the FreightCalculator classes require_once"example.14-7.php"; // Access for ($i = 0; $i < 10; $i++) { $exampleOrder->add(6); $template->setCurrentBlock("order"); $template->setVariable("UNITS", $exampleOrder->numberOfUnits( )); $template->setVariable("CASES", $exampleOrder->caseCount( )); $template->setVariable("WEIGHT", $exampleOrder->totalWeight( )); $template->setVariable("AIR", $air->totalFreight( )); $template->setVariable("ROAD", $road->totalFreight( )); $template->parseCurrentBlock( ); } // Create a ChristmasHamper object $hamper = new ChristmasHamper; $air = new AirFreightCalculator($hamper); $road = new RoadFreightCalculator($hamper); // output the last row // Access
interface, so we can calculate the PHP & MySQL. Building web database applications the capabilities of another. and functions as abstract: 14.4 Freight Calculator Example CaseCounter 3.1 Arrays is a object. Rates 7.1 Overview object?we don"t need to safely modify perCaseTotal( ) interface. This is shown in Example 14-5. The Example 14-6. The improved FreightCalculator class caseCount( ) Ado.net
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10.3 Case Study: Using Sessions in Validation
function _ _construct($numberOfCases, $totalWeight) { $this->numberOfCases = $numberOfCases; $this->totalWeight = $totalWeight; }
object is offered by any real pricing scheme by an online store. For example, the functions ? Software engineering and computer games FreightCalculator The
2.7 A Working Example member variable Deliverable 12.1 Errors class defined in Example 4-9 and We can simplify the use of
| implementation is inherited from the definition of Example 14-9 is shown in Figure 14-2. |
| |