php - mysqli_connect ( ) vs @mysqli_connect

Question

In looking at various mysql and php code, I've seen the database connection written either with an ampersand or without:

$db = mysqli_connect (db_host, db_user, db_pw, db_name);

vs

$db = @mysqli_connect (db_host, db_user, db_pw, db_name);

Is there are reason some developers use the @ and others do not?

Thank you

Answer 1

@是错误抑制运算符并隐藏函数输出的警告/错误。使用它通常被认为是不好的做法。

在开发过程中，出现错误消息是有原因的。如果您不想显示错误消息，请在php.ini配置中关闭错误报告并改为记录它们。