title: PHP quotes with a like query
body: <p>I have gotten myself into a tangled mess with quotes.</p>
  
  <p>I am trying to do a like query that looks something like this</p>
  
  <pre><code>$myQuery = 'SELECT col1 , col2 from my_table WHERE col_value LIKE '%$my_string_variable%';
  </code></pre>
  
  <p>But this query would obviously give an error.  What is the right syntax for this?  I tried messing with double-quotes, but that didn't work either.</p>