I'm usins Wordpress and that i got this:

Fatal error: Call to undefined function my_strip() in /home/uuwesl/public_html/wordpress-content/styles/especial-business-portfolio-wordpress-theme/especial/portfolio1col.php online 99

Line 99 shows:

$youtube=my_strip("?v=","&",$string);

Thank you for help.

look for

function my_strip

in .php files within your styles folder i.e. especial-business-portfolio-wordpress-theme folder

my_strip() is available or otherwise??

Put the following function inside your theme's functions.php:

function my_strip($start, $end, $total) {
    $total = stristr($total, $start);
    $f2 = stristr($total, $end);
    return substr($total, strlen($start), -strlen($f2));
}