A static function is a member function that is not associated with any instance of the class; it has no this pointer.
Use the "static" keyword to declare a static variable within a function like shown below. <?php function fun() { static $variable; static $another_variable = ''; } ?>
function of static relay
function of static relay
'global static'?! There is no such thing.
Some common things that use static electricity to function include photocopiers, printers, air purifiers, and paint sprayers. Static electricity is used in these devices to attract particles, create a static charge for imaging, or facilitate the transfer of paint particles.
Static functions are tied to a class, not to a particular object. A static function can only access static variables because it has no knowledge of member variables.
Scope of static variable is with in the file if it is static global. Scope of static variable is with in the function if variable is declared local to a function. But the life time is throughout the program
Always.
Yes. Any function can be overloaded. However you cannot override a static member function. Only instance members can be overridden.
A static variable is a variable that retains it's value over multiple calls to the function. When it is defined using the static keyword, that defining value is applied only on the first use. For example: function foo(){ static $bar = 5; $bar++; echo $bar . "\n"; } foo(); foo(); foo(); foo(); foo(); This code would output the following: 6 7 8 9 10
Yes. That is the definition of static.
A variable declared static outside of a function has a scope the of the source file only. It is not a global variable. A variable declared outside of a function and without the static qualifier would be a global variable.