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<?php /* Output: g 1024 error f 1024 error f 1024 error Expected Output: g 1024 error f 1024 error g 1024 error f 1024 error */ set_error_handler('f'); $error_handler = set_error_handler('g'); trigger_error('error'); trigger_error('error'); function f($errno, $errstr) { echo __METHOD__ . ' ' . $errno . ' ' . $errstr . "\n"; } function g($errno, $errstr) { echo __METHOD__ . ' ' . $errno . ' ' . $errstr . "\n"; set_error_handler('h'); restore_error_handler(); global $error_handler; call_user_func($error_handler, $errno, $errstr); } function h($errno, $errstr) { echo __METHOD__ . ' ' . $errno . ' ' . $errstr . "\n"; }

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