為何覆蓋父類方法參數(shù)不一致時報致命錯誤而不是警告？

公司的老舊代碼了，好多錯誤，暫時無法一一修復，下面這個子類覆蓋父類出錯時不應該是警告嗎？為什么是error，
我的PHP5.6，程序跑不下去了，同事的5.3可以通過繼續(xù)運行。

2018/03/13 16:00:00 [error] 3073#0: *52 FastCGI sent in stderr: "PHP message: PHP Strict Standards:  Declaration of AddressRCache::query() should be compatible with RCache::query($name, $field = NULL, $section = NULL, $lang = NULL, $type = 'json') in /data1/wwwroot/ssss/zc_core/sssss/refactor/cache/structs/address.php on line 72
PHP message: PHP Strict Standards:  Declaration of PublicPageQueryKeywords::getResult() should be compatible with PageQuery::getResult() in /data1/wwwroot/ssssss/zc_core/sssssss/refactor/pagequery/location/public/keywords.php on line 290" while reading response header from upstream, client: 192.168.161.92, server: local.ssssss.com, request: "GET /index.php?com=crontab&t=syncOrderToCRM&zmkm=1 HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "local.ssssssss.com"