sia con !in_array che con in_array == FALSE ottengo questo

codice:
u style="text-decoration: none; border-bottom: 1px solid #FF0000">Maecenasu> lacinia eros <u style="text-decoration: none; border-bottom: 1px solid #FF0000"><u style="text-decoration: none; border-bottom: 1px solid #FF0000"><u style="text-decoration: none; border-bottom: 1px solid #FF0000">sedu>u>u> <u style="text-decoration: none; border-bottom: 1px solid #FF0000">elementumu> tincidunt. <u style="text-decoration: none; border-bottom: 1px solid #FF0000"><u style="text-decoration: none; border-bottom: 1px solid #FF0000"><u style="text-decoration: none; border-bottom: 1px solid #FF0000">Donecu>u>u> gravida, <u style="text-decoration: none; border-bottom: 1px solid #FF0000">justou> <u style="text-decoration: none; border-bottom: 1px solid #FF0000"><u style="text-decoration: none; border-bottom: 1px solid #FF0000"><u style="text-decoration: none; border-bottom: 1px solid #FF0000">velu>u>u> <u style="text-decoration: none; border-bottom: 1px solid #FF0000">temporu> faucibus, <u style="text-decoration: none; border-bottom: 1px solid #FF0000">arcuu> <u style="text-decoration: none; border-bottom: 1px solid #FF0000"><u style="text-decoration: none; border-bottom: 1px solid #FF0000">semu>u>
il testo in input e' questo

Maecenas lacinia eros sed elementum tincidunt. Donec gravida, justo vel tempor faucibus, arcu sem commodo odio, in rhoncus mauris ipsum nec tortor. Mauris ac purus sit amet felis auctor fringilla. Duis vel risus odio. Praesent iaculis semper odio et congue. Donec quis erat egestas, malesuada nibh vel, imperdiet erat. Sed a nisi tortor. Morbi a neque nec mi placerat vestibulum sed sed dui. Morbi sodales erat odio, vitae luctus nisl consequat ut. Suspendisse ultricies sem arcu, nec dignissim neque vehicula at. In quam sapien, scelerisque ut porttitor luctus, tempus at velit. Nunc congue, nunc vel malesuada facilisis, risus elit rutrum erat, convallis bibendum massa tellus ut mi. Donec a lacus quam. Nam in velit eget lacus pellentesque finibus. Aliquam sagittis nisl id nulla feugiat consectetur. Nam eleifend erat sit amet lacus porttitor volutpat.