PHP Programming Solutions in VS .NET

Print Data Matrix in VS .NET PHP Programming Solutions

PHP Programming Solutions
ECC200 Recognizer In .NET
Using Barcode Control SDK for Visual Studio .NET Control to generate, create, read, scan barcode image in .NET framework applications.
Data Matrix ECC200 Generator In Visual Studio .NET
Using Barcode printer for Visual Studio .NET Control to generate, create DataMatrix image in .NET framework applications.
} else { die ("ERROR: Unknown method '$method'\n"); } } } // create instance $o = new overloadedClass; // execute overloaded method with different datatypes echo $o->invert("egg") "\n"; // result: "gge" echo $o->invert(true) "\n"; // result: false echo $o->invert(2) "\n"; // result: 05 // result: ('t', 'a', 'c') print_r($o->invert(array("c", "a", "t"))) "\n"; >
Data Matrix ECC200 Scanner In .NET Framework
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
Creating Bar Code In .NET
Using Barcode encoder for .NET Control to generate, create bar code image in .NET framework applications.
NOTE
Decoding Barcode In VS .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Data Matrix ECC200 Creator In C#
Using Barcode maker for .NET Control to generate, create ECC200 image in .NET framework applications.
PHP s version of overloading is not, in actual fact, true overloading As understood by other, stronger, object-oriented implementations (Java springs to mind), overloading refers to a situation where the same method behaves differently depending on the scope in which it is called, or the arguments passed to it So, an overloaded add() method might perform concatenation when called with string arguments, but mathematical addition when called with numeric arguments PHP s version of overloading does not currently conform to this other, more widely-accepted meaning of the term True overloading may, however, still be simulated in PHP through creative use of the __call() function and a series of switch/case statements and conditional tests, as demonstrated in this listing look at http://wwwphpnet/oop5 overloading for some more examples
ECC200 Creation In .NET
Using Barcode creator for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
Making ECC200 In VB.NET
Using Barcode generation for .NET framework Control to generate, create Data Matrix 2d barcode image in Visual Studio .NET applications.
525 Creating Catch-All Class Methods
Bar Code Printer In Visual Studio .NET
Using Barcode generation for .NET framework Control to generate, create barcode image in .NET framework applications.
Generating Code-128 In VS .NET
Using Barcode creation for .NET Control to generate, create Code 128B image in .NET applications.
Problem
Printing UPC Symbol In .NET
Using Barcode encoder for .NET framework Control to generate, create GS1 - 12 image in Visual Studio .NET applications.
Encode Identcode In VS .NET
Using Barcode drawer for .NET framework Control to generate, create Identcode image in .NET framework applications.
You want to create a catch-all method that intercepts and handles all method calls for a class
Encoding GS1-128 In Java
Using Barcode drawer for Android Control to generate, create EAN / UCC - 13 image in Android applications.
Bar Code Encoder In Java
Using Barcode encoder for Android Control to generate, create bar code image in Android applications.
5: Working with Functions and Classes
Data Matrix Generation In Java
Using Barcode drawer for Java Control to generate, create DataMatrix image in Java applications.
GS1 - 13 Generator In Objective-C
Using Barcode generation for iPad Control to generate, create GTIN - 13 image in iPad applications.
Solution
Print Code 39 Extended In None
Using Barcode printer for Font Control to generate, create Code 3/9 image in Font applications.
Print GS1 128 In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create EAN128 image in ASP.NET applications.
Define the special __call() method in the class and use it to intercept requests for nonexistent methods:
Barcode Recognizer In C#.NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
Code 128A Generation In .NET Framework
Using Barcode maker for ASP.NET Control to generate, create Code 128 Code Set C image in ASP.NET applications.
< php // define class class virtualMethodClass { // define method // to intercept all calls for // methods that are not already defined function __call($method, $args) { echo "You called method [$method] with arguments [" implode(", ", $args) "]\n"; } } // create object instance $obj = new virtualMethodClass(); // call a method that does not exist // result: "You called method [calculateArea] with arguments []" $obj->calculateArea(); // call another method that does not exist // with arguments // result: "You called method [jump] with arguments [10, inches]" $obj->jump("10", "inches"); >
Comments
Normally, PHP generates an error if you attempt to call a class method that does not exist However, PHP 5x introduced the ability to overload class methods, by enabling you to define a special __call() method that dynamically handles requests for nonexistent class methods One use of this new capability might be to add sophisticated error handling to your class, to deal gracefully with bad method calls; another might be to create virtual methods that don t actually exist in the class definition Because __call() receives two pieces of information the name of the method, and the arguments supplied to it it s fairly easy to write conditional tests to deal with a variety of different situations within __call() itself
PHP Programming Solutions
The next listing provides a concrete example of how __call() can serve as a provider of an entire family of virtual methods to a class In this example, __ call() intercepts get(Property)() and set(Property)() method calls and internally manipulates the corresponding object property, either retrieving its current value for the caller or setting it to a new value Thus, a call to the nonexistent class method getAge() is intercepted by __call() and internally translated into a request for the current value of the class property age
< php // define class class Dog { // define properties private $breed; private $name; private $age; // define a method // to handle all set() and get() requests function __call($method, $args) { // if get() // check if the property exists // return its value if (substr($method, 0, 3) == "get") { $property = substr($method, 3); foreach ($this as $key => $value) { if (strtolower($property) == strtolower($key)) { return $value; } } // if set() // check if the property exists // alter its value } else if (substr($method, 0, 3) == "set") { $property = substr($method, 3); foreach ($this as $key => $value) { if (strtolower($property) == strtolower($key)) { $this->{$key} = $args[0]; } }
Copyright © OnBarcode.com . All rights reserved.