<documentation title="Long Array Syntax"> <standard> <![CDATA[ Long array syntax must be used to define arrays. ]]> </standard> <code_comparison> <code title="Valid: Long form of array."> <![CDATA[ $arr = <em>array(</em> 'foo' => 'bar', <em>)</em>; ]]> </code> <code title="Invalid: Short form of array."> <![CDATA[ $arr = <em>[</em> 'foo' => 'bar', <em>]</em>; ]]> </code> </code_comparison> </documentation>