title: It is possible to disable type checking in PHP 7?
body: <p>It seems like the <code>strict_types</code> directive still throws a <code>TypeError</code> when it's disabled: </p>
  
  <p><a href="https://repl.it/repls/ImpeccableUncomfortableGrub" rel="nofollow noreferrer">https://repl.it/repls/ImpeccableUncomfortableGrub</a></p>
  
  <p>Is it possible to disable any runtime checking of types?</p>
  
  <p>Why: We have a very large codebase that we are migrating to PHP 7.1. We'd like to be able to fill in many return types from the existing annotations so that development can catch bugs sooner. However if we did this it would break many things in production (since the code flow would change).</p>