title: How can "[" be an operator in the PHP language specification?
body: <p>On the <a href="http://php.net/manual/en/language.operators.precedence.php" rel="noreferrer">http://php.net/manual/en/language.operators.precedence.php</a> webpage, the second highest precedence level contains a left-associative operator called <code>[</code>.</p>
  
  <p>I don't understand that. Is it the <code>[</code> used to access/modify array entries, as in <code>$myArray[23]</code> ? I cannot imagine any code snippet where we would need to know the "precedence" of it wrt other operators, or where the "associativity" of <code>[</code> would be useful.</p>