Using a PHP variable

I have :

<?php
//--------------TESTING VARIABLES------------

$test_String = $row_Latest['Map_String_Mob'];

print($test_String);

?>

I then try :

<a href=" <?php echo $test_String; ?>" target="_blank">Link</a>

This causing an error when it opens the new page.

How do I use the PHP $test_String in the HTML section. ie what is the
correct syntax.


Dim new_String

new_String = <?php echo $test_String; ?>"

<a href=" new_String" target="_blank">Link</a>