Online PHP editor | rfc for IhXsh

<?php class Base { private $basePrivate = 'private in base class'; protected $baseProtected = 'protected in base class'; public $basePublic = 'public in base class'; public function baseExample() { // We *can't* access $this->doesNotExist because it doesn't exist. echo $this->doesNotExist; // We *can* access the following: echo __LINE__ . ': ' . $this->basePrivate . "\n"; echo __LINE__ . ': ' . $this->baseProtected . "\n"; echo __LINE__ . ': ' . $this->basePublic . "\n"; } } class Child extends Base { private $childPrivate = 'private in child class'; protected $childProtected = 'protected in child class'; public $childPubilc = 'public in child class'; public function childExample() { // We can't access $this->basePrivate because the base class // declared it as private (this is the what private means) echo $this->basePrivate; // We can't access $this->doesNotExist because it doesn't exist. echo $this->doesNotExist; // We *can* access the following: echo __LINE__ . ': ' . $this->baseProtected . "\n"; echo __LINE__ . ': ' . $this->basePublic . "\n"; echo __LINE__ . ': ' . $this->childPrivate . "\n"; echo __LINE__ . ': ' . $this->childProtected . "\n"; echo __LINE__ . ': ' . $this->childPublic . "\n"; } } // Now we'll create instances of these classes. Since we're now outside of the // classes (i.e. we're using instances of the classes and not in the actual code of the class) // we can now only access public properties. $base = new Base; $child = new Child; // Let's run our demo methods to see the results echo $base->baseExample(); echo $child->childExample(); // Outside the class, we *can't* access the following: echo $base->doesNotExist; echo $base->basePrivate; echo $base->baseProtected; echo $child->doesNotExist; echo $child->basePrivate; echo $child->baseProtected; echo $child->childPrivate; echo $child->childProtected; // Outside the class, we *can* access public properties echo __LINE__ . ': ' . $base->basePublic . "\n"; echo __LINE__ . ': ' . $child->basePublic . "\n"; echo __LINE__ . ': ' . $child->childPublic . "\n";

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