Need some help from PHP coder

[hugo04]

1. -> 11
2. you have to put 1 or 2 parameter to complete this
3. EB DEVELOPMENT

code

<?php
$pos= strpos ('WEB DEVELOPMENT', 'MENT');
echo $pos ;
echo "<br />";
?>
result 11

<?php
$teks = "POLITEKNIK ABC";
echo substr($teks, 1, 3);
echo "<br />";
?>
--> start pos 1 and length 3
result OLI

<?php
$teks = ('WEB DEVELOPMENT');
echo trim($teks, 'W.');
echo "<br />";
?>

result EB DEVELOPMENT