Question

For a new project that I’m doing in PHP I’ve created an SQLMethods class to connect to the database and perform queries. Tonight was the first night that I actually got to test it (I wrote it a week or so ago and forgot about it) and an unexpected error occured: When it was calling my ExecuteQuery() function, it wouldn’t use the database I selected in the constructor.

The constructor:

    public function SQLMethods() {         $SQLConnection = mysql_connect($SQLDBAddress, $SQLUserName, $SQLPassword);          if (!$SQLConnection) {             die('Could not connect: ' . mysql_error());         }          mysql_select_db($SQLDB, $SQLConnection);     } 

The function in question:

    public function ExecuteQuery($Query) {         mysql_query($Query, $SQLConnection) or die('Could not perform query: ' . mysql_error());     } 

Does anyone see what the issue might be? Does the connection close after the constructor completes?

Answer 1

you should declare $SQLConnection in your class, and you should refer to it as

 $this->SQLConnection 

and not simply $SQLConnection.