PHP quotes inside quotes

Question

Is it possible to put quotes inside quotes?

If so how?

Here is my code:

Answer 1

According to php.net

To specify a literal single quote, escape it with a backslash (\). 

It means you could have:

<?php
  echo '<span onclick="$(this).addClass(\'selected\');"> </span>';
?>

Answer 2

Heredoc is the perfect solution for this:

<?php
echo <<< HereDocString
    <span onclick="$(this).addClass('selected');"> </span>
HereDocString;
?>

Answer 3

You could do this:

<?php
  // some code
?>

    <span onclick="$(this).addClass('selected');"> </span>

<?php
  // some more code.

?>