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run code in 200+ php & hhvm versions
Bugs & Features
<?php $convert = array_combine( array('ou', 'dou', 'npo', 'dop'), array( 1, 2, 3, 4 ) ); var_dump($convert); /*'<h4>Категория учреждения</h4>' + '<select name="categoryOU">' + '<option value=""></option>' + '<option value="dou">Детские сады</option>' + '<option value="ou">Образовательные учреждения</option>' + '<option value="npo">Учреждения начального и среднего профессионального образования</option>' + '<option value="dop">Учреждения дополнительного образования</option>' + '</select>' +*/ abstract class T { static public $instanses; final private function __construct(){ } public static function getInstance() { var_dump(static::$instanses); if (!(static::$instanses instanceof static)) { static::$instanses = new static; } var_dump(static::$instanses); return static::$instanses; } } class A extends T { static public $instanses; } class B extends A { static public $instanses; } $t = A::getInstance(); var_dump($t); $t1 = B::getInstance(); var_dump($t1); new B(); ?>
based on qoeLj
Output for 7.0.0 - 7.2.0
array(4) { ["ou"]=> int(1) ["dou"]=> int(2) ["npo"]=> int(3) ["dop"]=> int(4) } NULL object(A)#1 (0) { } object(A)#1 (0) { } NULL object(B)#2 (0) { } object(B)#2 (0) { } Fatal error: Uncaught Error: Call to private T::__construct() from invalid context in /in/tZI60:57 Stack trace: #0 {main} thrown in /in/tZI60 on line 57
Process exited with code 255.
Output for 5.3.18 - 5.6.28
array(4) { ["ou"]=> int(1) ["dou"]=> int(2) ["npo"]=> int(3) ["dop"]=> int(4) } NULL object(A)#1 (0) { } object(A)#1 (0) { } NULL object(B)#2 (0) { } object(B)#2 (0) { } Fatal error: Call to private T::__construct() from invalid context in /in/tZI60 on line 57
Process exited with code 255.