een deel vervangen

<?php
$query = mysql_query('SELECT * FROM site_content');
$rows  = mysql_fetch_assoc($query);
echo nl2br(str_replace($rows['home']);
?>

<?php
$query = mysql_query('SELECT * FROM site_content');
$rows  = mysql_fetch_assoc($query);
echo nl2br(str_replace($rows['home']);
?>

<?php
$query = mysql_query('SELECT * FROM site_content');
$rows  = mysql_fetch_assoc($query);
$message = preg_replace("#\[LINK=(.*?)\](.*?)\[/LINK\]#si","<a href=\"\\1\" target=\"_blank\">\\2</a>", nl2br($rows['home']));
echo $message;

<?php
$query = mysql_query('SELECT * FROM site_content');
$rows  = mysql_fetch_assoc($query);
$message = preg_replace("#\[LINK=(.*?)\](.*?)\[/LINK\]#si","<a href=\"\\1\" target=\"_blank\">\\2</a>", nl2br($rows['home']));
echo $message;