Error using return in PHP
Answer
In the use of such as Mysqli_conn, as long as there are "I" statements will be wrong, I loaded the latest version of PHP.
In a function, a return $db is used and an error occurs.
What's going on?
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MySQL and mysqli are both MySQL for PHP connection extensions. There are only two reasons for the error, 1: There is no installation of the mysqli extension; 2: Parameter usage error or database information error
What are you going to return? If a function function a ()
{
function is a separate piece of the day. There is no $db this variable at all in function. Where did you return from?
return $db;
}
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Because the foundation is not well-played.
MySQL and mysqli are both MySQL for PHP connection extensions. There are only two reasons for the error, 1: There is no installation of the mysqli extension; 2: Parameter usage error or database information error
What are you going to return? If a function function a ()
{
function is a separate piece of the day. There is no $db this variable at all in function. Where did you return from?
return $db;
}
Copy Code
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Well, I think it might not have opened the extension
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You sent out the code.
It's not clear how it looks.
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Thank you! It's mysqli not open.
But return is still a mistake.
function Db_connect ()
{
@ $db = mysqli_connect (' localhost ', ' root ', ' 8251617 ', ' bookmarks ');
if (! $db)
{
throw new Exception (' Could not connect to database server ');
}
Else
{
return $db;
Echo ' dddd ';
}
}
The above code, such as remove return can pass, but I need return value AH.
}
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Thank you 1
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All operations after return do not continue
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The problem is: as long as there is return in the code immediately out of HTTP 500 error, the page can not be found, and the previous mysqli out the same mistake, there is something not open?
Thank you
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Did you install the Xdebug?
After a similar problem, you can use it to chase
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There seems to be a problem with the code.
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