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<?php try { try { try { throw new Exception('Foo'); } finally { throw new Exception('Bar', 0, null); } } catch (Exception $e) { throw new Exception('Zot', 0, $e); } } catch(Exception $exception) { $foo = $exception; $previous = 0; while ($foo = $foo->getPrevious()) { $previous++; echo "Level $previous\n"; var_dump($foo); } }
Output for git.master, git.master_jit, rfc.property-hooks
Level 1 object(Exception)#2 (7) { ["message":protected]=> string(3) "Bar" ["string":"Exception":private]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/H3Pe8" ["line":protected]=> int(10) ["trace":"Exception":private]=> array(0) { } ["previous":"Exception":private]=> object(Exception)#1 (7) { ["message":protected]=> string(3) "Foo" ["string":"Exception":private]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/H3Pe8" ["line":protected]=> int(7) ["trace":"Exception":private]=> array(0) { } ["previous":"Exception":private]=> NULL } } Level 2 object(Exception)#1 (7) { ["message":protected]=> string(3) "Foo" ["string":"Exception":private]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/H3Pe8" ["line":protected]=> int(7) ["trace":"Exception":private]=> array(0) { } ["previous":"Exception":private]=> NULL }

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