title: PHP explode string using a regular expression
body: <p>I have a long string consisting of a series of sentences separated by a single quote.</p>
  
  <p>Example:</p>
  
  <pre><code>This\'s sentence number 1'This\'s sentence number 2'
  </code></pre>
  
  <p>Notice that the string has single quotes part of the sentence itself which are escaped. I need to explode the string using single quote, but not the escaped single quote.</p>
  
  <p>The output should be:</p>
  
  <pre><code>Array{
        [0]=&gt;This\'s sentence number 1
        [1]=&gt;This\'s sentence number 2
  }
  </code></pre>
  
  <p>Basically I need to explode the string on { ' }, but not { \' }.
  Thanks in advance.</p>