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<?php class B { } class A { static $var; static function get() { if (isset(self::$var)) return self::$var; $x = new B(); $x->Children = array(0 => new B()); self::$var = $x; return $x; } } $a = A::get(); var_dump($a); unset($a->Children[0]); var_dump($a); $b = A::get(); var_dump($b); ?>
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Creation of dynamic property B::$Children is deprecated in /in/fTWPo on line 14 object(B)#1 (1) { ["Children"]=> array(1) { [0]=> object(B)#2 (0) { } } } object(B)#1 (1) { ["Children"]=> array(0) { } } object(B)#1 (1) { ["Children"]=> array(0) { } }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Deprecated: Creation of dynamic property B::$Children is deprecated in /in/fTWPo on line 14 object(B)#1 (1) { ["Children"]=> array(1) { [0]=> object(B)#2 (0) { } } } object(B)#1 (1) { ["Children"]=> array(0) { } } object(B)#1 (1) { ["Children"]=> array(0) { } }
Output for 5.6.38, 7.1.0 - 7.1.22, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
object(B)#1 (1) { ["Children"]=> array(1) { [0]=> object(B)#2 (0) { } } } object(B)#1 (1) { ["Children"]=> array(0) { } } object(B)#1 (1) { ["Children"]=> array(0) { } }

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