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run code in 150+ php & hhvm versions
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<?php function getStaticVar($name, $t = false) { static $flags = array(); var_dump($flags); if(!isset($flags[$name])) { $flags[$name] = false; } if ($t) { $flags[$name] = true; } return $flags[$name]; } $name = 'varName'; echo getStaticVar($name); echo getStaticVar($name); echo getStaticVar($name);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(0) { } array(1) { ["varName"]=> bool(false) } array(1) { ["varName"]=> bool(false) }