<?php

$a = array(
  'a' => 'val1',
  $a => 'val2',
  'a' => val3(),
  1 => val4(),
  '1' => val5(),
  1 => $val6,
  'b' => 'val7',
  b() => 'val8',
);
static $b = array(
  1 => 'one',
  2 => 'two',
  2 => 'TWO',
);
$c = array();
$d = array(
  A => 'ay',
  A => 'aye',
  'A' => 'AYE',
);
$e = array(
  self::B => 'bee',
  self::B => 'bea',
  self::b() => 'ehh',
  self::$b => 'weh',
  B => 'b',
  C::B => 'cb',
);
$f = array(
  $a => 'var',
  'a' => 'lit',
  $a => 'var2',
);
~~~~~~~~~~
error:6:3
error:9:3
error:16:3
error:21:3
error:26:3
error:35:3