trigger_error()はE_USER_NOTICEがデフォ 定数とerror levelの対応 constant value error_type LEVEL_DEBUG 1000 LEVEL_INFO 2000 E_USER_NOTICE,E_NOTICE LEVEL_WARN 3000 E_USER_WARNING,E_WARNING LEVEL_ERROR 4000 LEVEL_FATAL 5000 E_USER_ERROR,E_ERRO…