mysql_query()执行select语句,无论能否查询到结果,好像返回值是一样的

mysql_query()执行select语句,无论能否查询到结果,好像返回值是一样的。如果这样的话,我怎样才能知道有没有查询到结果呢?

3个回答

返回值不是一样的。没有结果就是“”,,,,,写方法判断结果集长度等于0返回NULL

应该返回结果不一样的,跟楼上说的一样

如果mysql_query()执行失败会返回false,可以写成 if(my_sql(...)) ... else ...

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分享思维,改变世界. web网页制作,期末大作业. 所用技术:html css javascript 分享所学所得

技术大佬:我去,你写的 switch 语句也太老土了吧

昨天早上通过远程的方式 review 了两名新来同事的代码,大部分代码都写得很漂亮,严谨的同时注释也很到位,这令我非常满意。但当我看到他们当中有一个人写的 switch 语句时,还是忍不住破口大骂:“我擦,小王,你丫写的 switch 语句也太老土了吧!” 来看看小王写的代码吧,看完不要骂我装逼啊。 private static String createPlayer(PlayerTypes p...

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