Online PHP editor | refs for GHcR8

<?php function VS($x, $y) { var_dump($x === $y); if ($x !== $y) { echo "Failed: $y\n"; echo "Got: $x\n"; var_dump(debug_backtrace()); } } function VERIFY($x) { VS($x != false, true); } ////////////////////////////////////////////////////////////////////// $valid_res = imagecreate(10, 10); $invalid_res = imagecreate(10, 10); imagedestroy($invalid_res); VERIFY(!is_object(null)); VERIFY(!is_object(123)); VERIFY(!is_object("test")); VERIFY(!is_object(array(123))); VERIFY(is_object(new stdclass)); VERIFY(!is_object($valid_res)); VERIFY(!is_object($invalid_res)); { $v = unserialize("O:8:\"stdClass\":1:{s:4:\"name\";s:5:\"value\";}"); VERIFY(is_object($v)); } { $v = unserialize("O:8:\"stdClass\":1:{s:7:\"\0*\0name\";s:5:\"value\";}"); VERIFY(is_object($v)); }