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0 - NORMAL��
1 - ABORTED��쳣�˳��
2 - TIMEOUT��ʱ��

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�ű�Ҳ�п��ܱ��õĽű��ʱ��жϡ�Ĭ�ϵĳ�ʱ��Ϊ 30 �롣��ֵ��ͨ�� php.ini �� max_execution_time �� httpd.conf ��ж�Ӧ��"php_value max_execution_time"�� set_time_limit() ��ġ��ʱ��ʱ�򣬽ű��жϵ��˳��ǰ��ע��Ĺرմ��Ҳ��ʱ��ִ�С��ڸùرմ��У��ͨ�� connection_status() ��鳬ʱ�Ƿ��¹رմ��á��ʱ��˹رմ��ĵ��ã��ú�� 2��

��Ҫע��һ�� ABORTED �� TIMEOUT ״̬��ͬʱ��Ч��ڸ�� PHP ��û��˳��ʱ�ǿ��ܵġ�PHP ��Ȼע��û��Ѿ��ж��ӵ��ű��Ȼ��е��е�ʱ��ƣ��ű��˳��ù��Ĺرմ��Ҳ��ִ�С��ʱ�ᷢ�ֺ�� connection_status() �� 3��

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