title: PHP email validation
body: <p>For <strong>PHP</strong> what is the best email validation using <em>preg</em>, <strong>NOT</strong> <em>ereg</em> because it's <strong>deprecated/removed</strong>.</p>
  
  <p>I <strong><em>don't</em></strong> need to check if the website exists (it's not like maximum security).</p>
  
  <p>I've found many ways with <em>ereg</em> but they (obviously) aren't good practice.</p>