example of how static variable works

demo.php

<?php
function repeatIt(){
	static $id;
	if(!$id) $id=0;
	$id++;
	echo sprintf('<div id="someprefix_%s">Butang %s</div>',$id,$id);
}

for($i=0;$i<10;$i++){
	repeatIt();
}

return; //just exit but i don't want halt the script execution