php-practice/factory.php at master · php-dev/php-practice · GitHub

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<?php
// define abstract 'ArrayFactory' class
abstractclass ArrayFactory{
abstractpublicfunctioncreateArrayObj($type);
}

// define concrete factory to create numerically-indexed array
//objects
class NumericArrayFactory extends ArrayFactory{
private$context='numeric';
publicfunctioncreateArrayObj($type){
$arrayObj=NULL;
switch($type){
case"uppercase";
$arrayObj=newUppercasedNumericArrayObj();
break;
case"lowercase";
$arrayObj=newLowercasedNumericArrayObj();
break;
default:
$arrayObj=newLowercasedNumericArrayObj();
break;
 }
return$arrayObj;
 }
}

// define concrete factory to create associative array objects
class AssociativeArrayFactory extends ArrayFactory{
private$context='associative';
publicfunctioncreateArrayObj($type){
$arrayObj=NULL;
switch($type){
case"uppercase";
$arrayObj=newUppercasedAssociativeArrayObj();
break;
case"lowercase";
$arrayObj=newLowercasedAssociativeArrayObj();
break;
default:
$arrayObj=newLowercasedAssociativeArrayObj();
break;
 }
return$arrayObj;
 }
}

//Read more at http://www.devshed.com/c/a/PHP/The-Basics-of-Using-the-Factory-Pattern-in-PHP-5/1/#KfCG3oZHYm5v2OUE.99

// define abstract 'ArrayObj' class
abstractclass ArrayObj{
abstractpublicfunctiongetArraySize();
abstractpublicfunctiongetArrayElements();
}

// define concrete 'UppercasedNumericArrayObj' class
class UppercasedNumericArrayObj extends ArrayObj{
private$inputArray=array('Element 1','Element 2','Element
3');
publicfunctiongetArraySize(){
returncount($this->inputArray);
 }
publicfunctiongetArrayElements(){
returnarray_map(strtoupper,$this->inputArray);
 }
}

// define concrete 'LowercasedNumericArrayObj' class
class LowercasedNumericArrayObj extends ArrayObj{
private$inputArray=array('ELEMENT 1','ELEMENT 2','ELEMENT
3');
publicfunctiongetArraySize(){
returncount($this->inputArray);
 }
publicfunctiongetArrayElements(){
returnarray_map(strtolower,$this->inputArray);
 }
}

// define concrete 'UppercasedAssociativecArrayObj' class
class UppercasedAssociativeArrayObj extends ArrayObj{
private$inputArray=array('Element 1'=>'This is element
1','Element 2'=>'This is element 2','Element 3'=>'This is element
3');
publicfunctiongetArraySize(){
returncount($this->inputArray);
 }
publicfunctiongetArrayElements(){
returnarray_map(strtoupper,$this->inputArray);
 }
}

// define concrete 'LowercasedAssociativecArrayObj' class
class LowercasedAssociativeArrayObj extends ArrayObj{
private$inputArray=array('ELEMENT 1'=>'THIS IS ELEMENT
1','ELEMENT 2'=>'THIS IS ELEMENT 2','ELEMENT 3'=>'THIS IS ELEMENT
3');
publicfunctiongetArraySize(){
returncount($this->inputArray);
 }
publicfunctiongetArrayElements(){
returnarray_map(strtolower,$this->inputArray);
 }
}
//Read more at http://www.devshed.com/c/a/PHP/The-Basics-of-Using-the-Factory-Pattern-in-PHP-5/2/#josG1Ho56KgIFw8X.99

// testing

try{
// create lowercased numeric array object
$lowerNumArray=NumericArrayFactory::createArrayObj
('lowercase');
// display array object size
echo'Number of elements of lowercased numeric array is the
following : '.$lowerNumArray->getArraySize();

/*
 displays the following:
 Number of elements of lowercased numeric array is the
following : 3
 */

// display array object elements
print_r($lowerNumArray->getArrayElements());

/*
 displays the following
 Array ( [0] => element 1 [1] => element 2 [2] => element 3 )
 */

// create uppercased numeric array object
$upperNumArray=NumericArrayFactory::createArrayObj
('uppercase');
// display array object size
echo'Number of elements of uppercased numeric array is the
following : '.$upperNumArray->getArraySize();

/*
 displays the following:
 Number of elements of uppercased numeric array is the
following : 3
 */

// display array object elements
print_r($upperNumArray->getArrayElements());

/*
 displays the following
 Array ( [0] => ELEMENT 1 [1] => ELEMENT 2 [2] => ELEMENT 3 )
 */

// create lowercased associative array object
$lowerAssocArray=AssociativeArrayFactory::createArrayObj
('lowercase');
// display array object size
echo'Number of elements of lowercased associative array is
the following : '.$lowerAssocArray->getArraySize();

/*
 displays the following:
 Number of elements of lowercased associative array is the
following : 3
 */

// display array object elements
print_r($lowerAssocArray->getArrayElements());

/*
 displays the following
 Array ( [ELEMENT 1] => this is element 1 [ELEMENT 2] => this
is element 2 [ELEMENT 3] => this is element 3 )
 */

// create uppercased associative array object
$upperAssocArray=AssociativeArrayFactory::createArrayObj
('uppercase');
// display array object size
echo'Number of elements of uppercased associative array is
the following : '.$upperAssocArray->getArraySize();

/*
 displays the following:
 Number of elements of uppercased associative array is the
following : 3
 */

// display array object elements
print_r($upperAssocArray->getArrayElements());

/*
 displays the following
 Array ( [Element 1] => THIS IS ELEMENT 1 [Element 2] => THIS
IS ELEMENT 2 [Element 3] => THIS IS ELEMENT 3 )
 */
}

catch(Exception$e){
throw$e->getMessage();
exit();
}
//Read more at http://www.devshed.com/c/a/PHP/The-Basics-of-Using-the-Factory-Pattern-in-PHP-5/3/#LFWVuMjAfLiLkE7w.99


?>