title: php size of base64_encode string - file
body: <p>I'm wondering how could I know the file size of a base64_encoded string? For instance:</p>
  
  <pre><code>$data = 'iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABl'
         . 'BMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDr'
         . 'EX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r'
         . '8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
  $data = base64_decode($data);
  </code></pre>
  
  <p>Thanks</p>