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PHP Static Variables

PHP Static Variables


Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we will be discussing about the PHP Static Variables.

The final type of variable scoping that we will discuss about is called static variable. In opposition to the variables declared as function parameters, which are destroyed on the function's exit, a static variable will not loose its value when the function exits and is still going to hold that value should the function be called again.

You can declare a variable to be static by placing the keyword STATIC in front of the variable name.

Example

The following below is a simple example -

<?php
   function keep_track() {
      STATIC $count = 0;
      $count++;
      print $count;
      print "<br />";
   }
   
   keep_track();
   keep_track();
   keep_track();
?>

Output

When the above code is executed, it will produce the following result -

1
2
3


Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial guide, we are going to be discussing about the PHP Constants.

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