Automatic Links clickable new window in PHP print -


how make links clickable in php print code.i have tried add links in details show them in plain text.i want them clickable new window link automatically

below my code:

<?php print $details; ?>

like add details "visit http://facebook.com please" want "http://facebook.com" clickable.

you can 

<?php    $details = '<a href="http://facebook.com">my link </a>';     echo  $details;  ?>

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