<?php

array($x => $y);
array($x=>$y);
array($x =>$y);
array($x=> $y);

array(
  $x => $y,
);
array(
  $x =>
    $y,
);
array(
  $x=>$y,
);
~~~~~~~~~~
warning:4:9
warning:5:10
warning:6:9
warning:16:5
~~~~~~~~~~
<?php

array($x => $y);
array($x => $y);
array($x => $y);
array($x => $y);

array(
  $x => $y,
);
array(
  $x =>
    $y,
);
array(
  $x => $y,
);