@ 2014-08-22T09:40:46Z <?php
interface GoAlgorithm
{
public function go();
}
class GoByDrivingAlgorithm implements GoAlgorithm
{
public function go()
{
echo "Now I'm driving." .PHP_EOL;
}
}
class GoByFlying implements GoAlgorithm
{
public function go()
{
echo "Now I'm flying." . PHP_EOL;
}
}
class GoByFlyingFast implements GoAlgorithm
{
public function go()
{
echo "Now I'm flying fast" . PHP_EOL;
}
}
class Vehicle
{
private $goAlgorithm;
public function __construct(GoAlgorithm $goType = null) {
parent::__construct();
$this->goAlgorithm = $goType;
}
public function setModeOfTransportation(GoAlgorithm $goType)
{
$this->goAlgorithm = $goType;
}
public function drive()
{
return $this->goAlgorithm->go();
}
}
// setter injection
$streetRacer = new Vehicle();
$streetRacer->setModeOfTransportation(new GoByDrivingAlgorithm());
$formulaone = new Vehicle();
$formulaone->setModeOfTransportation(new GoByDrivingAlgorithm());
$helicopter = new Vehicle();
$helicopter->setModeOfTransportation(new GoByFlying());
$jets = new Vehicle();
$jets->setModeOfTransportation(new GoByFlyingFast());
$streetRacer->drive();
$formulaone->drive();
$helicopter->drive();
$jets->drive();
// constructor injection
$streetRacer = new Vehicle(new GoByDrivingAlgorithm());
$formulaone = new Vehicle(new GoByDrivingAlgorithm());
$helicopter = new Vehicle(new GoByFlying());
$jets = new Vehicle(new GoByFlyingFast());
$streetRacer->drive();
$formulaone->drive();
$helicopter->drive();
$jets->drive();
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Output for 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.7 Fatal error: Cannot use "parent" when current class scope has no parent in /in/F0kti on line 37
Process exited with code 255 . Output for 7.4.0 - 7.4.33 Deprecated: Cannot use "parent" when current class scope has no parent in /in/F0kti on line 37
Fatal error: Uncaught Error: Cannot access parent:: when current class scope has no parent in /in/F0kti:37
Stack trace:
#0 /in/F0kti(53): Vehicle->__construct()
#1 {main}
thrown in /in/F0kti on line 37
Process exited with code 255 . Output for 7.0.0 - 7.0.20 , 7.1.0 - 7.1.20 , 7.2.6 - 7.2.33 , 7.3.16 - 7.3.33 Fatal error: Uncaught Error: Cannot access parent:: when current class scope has no parent in /in/F0kti:37
Stack trace:
#0 /in/F0kti(53): Vehicle->__construct()
#1 {main}
thrown in /in/F0kti on line 37
Process exited with code 255 . Output for 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.24 - 5.5.35 , 5.6.7 - 5.6.28 Fatal error: Cannot access parent:: when current class scope has no parent in /in/F0kti on line 37
Process exited with code 255 . Output for 5.0.0 - 5.0.5 Fatal error: Argument 1 must not be null in /in/F0kti on line 36
Process exited with code 255 . Output for 4.4.2 - 4.4.9 Parse error: syntax error, unexpected T_STRING in /in/F0kti on line 3
Process exited with code 255 . Output for 4.3.0 - 4.3.1 , 4.3.5 - 4.3.11 , 4.4.0 - 4.4.1 Parse error: parse error, unexpected T_STRING in /in/F0kti on line 3
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error in /in/F0kti on line 3
Process exited with code 255 . preferences:dark mode live preview
207.04 ms | 401 KiB | 312 Q