This following php code can be used to disable mouse right click option. Here, "disable_right_click()" function is used to disable right click in the webpage.
<?php
function disable_right_click()
{
echo ' <script type="text/javascript">
var isNS = (navigator.appName == "Netscape") ? 1 : 0;
if(navigator.appName == "Netscape") document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
function mischandler(){
return false;
}
function mousehandler(e){
var myevent = (isNS) ? e : event;
var eventbutton = (isNS) ? myevent.which : myevent.button;
if((eventbutton==2)||(eventbutton==3)) return false;
}
document.oncontextmenu = mischandler;
document.onmousedown = mousehandler;
document.onmouseup = mousehandler;
</script>';
}
disable_right_click();
echo "<h2>Disable Right Click</h2>";
?>