Basic usage php static static variables

 1 <?php
 2 
 3 function staticFun()
 4 {
 5     $i = 1;
 6     static $y = 3;
 7     $i++;
 8     $y++;
 9     echo $i.'<br>';
10     echo $y.'<br>';
11 }
12 
13 staticFun();
14 echo    '<hr>';
15 staticFun();
16 echo    '<hr>';
17 staticFun();

 result: