📄 compositepatterndemo.php
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<html><body><head><style>body {font : 12px verdana; font-weight:bold}td {font : 11px verdana;}</style></head><?phpabstract class AbstractInstrument { private $name; private $category; private $instruments = array(); public function add(AbstractInstrument & $instrument) { array_push($this->instruments, $instrument); } public function remove(AbstractInstrument & $instrument) { array_pop($this->instruments); } public function hasChildren() { return (bool)(count($this->instruments) > 0); } public function getChild($i) { return $instruments[i]; } public function getDescription() { echo "- one " . $this->getName(); if ($this->hasChildren()) { echo " which includes:<br>"; foreach($this->instruments as $instrument) { echo "<table cellspacing=5 border=0><tr><td> </td><td>-"; $instrument->getDescription(); echo "</td></tr></table>"; } } } public function setName($name) { $this->name = $name; } public function getName() { return $this->name; } public function setCategory($category) { $this->category = $category; } public function getCategory() { return $this->category; }}class Guitar extends AbstractInstrument { function __construct($name) { parent::setName($name); parent::setCategory("guitars"); } }class DrumSet extends AbstractInstrument { function __construct($name) { parent::setName($name); parent::setCategory("drums"); }}class SnareDrum extends AbstractInstrument { function __construct($name) { parent::setName($name); parent::setCategory("snare drums"); }}class BaseDrum extends AbstractInstrument { function __construct($name) { parent::setName($name); parent::setCategory("base drums"); }}class Cymbal extends AbstractInstrument { function __construct($name) { parent::setName($name); parent::setCategory("cymbals"); }}$drums = new DrumSet("tama maple set");$drums->add(new SnareDrum("snare drum"));$drums->add(new BaseDrum("large bass drum"));$cymbals = new Cymbal("zildjian cymbal set");$cymbals->add(new Cymbal("small crash"));$cymbals->add(new Cymbal("large high hat"));$drums->add($cymbals);$guitar = new Guitar("gibson les paul");echo "List of Instruments: <p>";$drums->getDescription();$guitar->getDescription();?></body></html>⌨️ 快捷键说明
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