How to declare a global variable in php?

The $GLOBALS array can be used instead: $GLOBALS[‘a’] = ‘localhost’; function body(){ echo $GLOBALS[‘a’]; } From the Manual: An associative array containing references to all variables which are currently defined in the global scope of the script. The variable names are the keys of the array. If you have a set of functions that need … Read more

How do I turn off the mysql password validation?

Here is what I do to remove the validate password plugin: Login to the mysql server as root mysql -h localhost -u root -p Run the following sql command: uninstall plugin validate_password; If last line doesn’t work (new mysql release), you should execute UNINSTALL COMPONENT ‘file://component_validate_password’; I would not recommend this solution for a production … Read more

Why does this UnboundLocalError occur (closure)? [duplicate]

Python doesn’t have variable declarations, so it has to figure out the scope of variables itself. It does so by a simple rule: If there is an assignment to a variable inside a function, that variable is considered local.[1] Thus, the line counter += 1 implicitly makes counter local to increment(). Trying to execute this … Read more

Are global variables bad? [closed]

The problem with global variables is that since every function has access to these, it becomes increasingly hard to figure out which functions actually read and write these variables. To understand how the application works, you pretty much have to take into account every function which modifies the global state. That can be done, but … Read more

Android global variable

You can extend the base android.app.Application class and add member variables like so: public class MyApplication extends Application { private String someVariable; public String getSomeVariable() { return someVariable; } public void setSomeVariable(String someVariable) { this.someVariable = someVariable; } } In your android manifest you must declare the class implementing android.app.Application (add the android:name=”.MyApplication” attribute to … Read more

Why isn’t the ‘global’ keyword needed to access a global variable?

The keyword global is only useful to change or create global variables in a local context, although creating global variables is seldom considered a good solution. def bob(): me = “locally defined” # Defined only in local context print(me) bob() print(me) # Asking for a global variable The above will give you: locally defined Traceback … Read more

Global variables in AngularJS

You’ve got basically 2 options for “global” variables: use a $rootScope http://docs.angularjs.org/api/ng.$rootScope use a service http://docs.angularjs.org/guide/services $rootScope is a parent of all scopes so values exposed there will be visible in all templates and controllers. Using the $rootScope is very easy as you can simply inject it into any controller and change values in this … Read more

Do DOM tree elements with IDs become global properties?

What is supposed to happen is that ‘named elements’ are added as apparent properties of the document object. This is a really bad idea, as it allows element names to clash with real properties of document. IE made the situation worse by also adding named elements as properties of the window object. This is doubly … Read more

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