HTML trong PHP
echo "<a href='".$link_address."'>Link</a>";
hoặc
echo "<a href='$link_address'>Link</a>";
PHP trong HTML
<a href="<?php echo $link_address;?>"> Link </a>
echo "<a href='".$link_address."'>Link</a>";
hoặc
echo "<a href='$link_address'>Link</a>";
<a href="<?php echo $link_address;?>"> Link </a>