php PHPのクラスメソッドとインスタンスメソッド

Posted 2021-05-04

<?php
class A {
	public static function classMethod() {
		echo "class method\n";
	}

	public function instanceMethod() {
		echo "instance method\n";
	}

	public function inspect() {
		self::classMethod();
		self::instanceMethod();
	}
}

$a = new A();
$a->classMethod();
$a->instanceMethod();
echo "--------------------------\n";
$a->inspect();
echo "--------------------------\n";
A::classMethod();
A::instanceMethod();
/**
 *
 * class method
 * instance method
 * --------------------------
 * class method
 * instance method
 * --------------------------
 * class method
 * 
 * Deprecated: Non-static method A::instanceMethod() should not be called statically
 * instance method
 * PHP Deprecated:  Non-static method A::instanceMethod() should not be called statically
 * 
 * --------------------------
 *
 * 流石はPHPといったところでしょうか？ instanceMethod()は、instance を作らないとアクセスできないようですが、
 * それ以外は何でもありです。
 */