I am trying to add a custom link to the href tag using the following code
<input type="text" id="bootstrap_css_link_script" aria-hidden="true"
class="offscreen form-control" value="<?php echo "<link
href='".$bootstrap_css_link."'>"; ?>">
everything is fine but I want to get the href tag in doublequote("") as shown below
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css">
But after executing the above code I am getting the following result
<link href='//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css'>