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trait ArrayTestCaseTrait
{
    /**
     * Asserts that two associative arrays are similar.
     *
     * Both arrays must have the same indexes with identical values
     * without respect to key ordering
     *
     * @param array $expected
     * @param array $array
     */
    protected function assertArraySimilar(array $expected, array $array)
    {
        $this->assertTrue(count(array_diff_key($array, $expected)) === 0);

        foreach ($expected as $key => $value) {
            if (is_array($value)) {
                $this->assertArraySimilar($value, $array[$key]);
            } else {
                $this->assertContains($value, $array);
            }
        }
    }
}

$a = array(
    '1' => 12,
    '3' => 14,
    '6' => 11
);
$b = array(
    '1' => 12,
    '3' => 14,
    '6' => 11
);
$c = array(
    '3' => 14,
    '1' => 12,
    '6' => 11
);
$d = array(
    '1' => 11,
    '3' => 14,
    '6' => 11
);

$a == $b;   // evaluates to true
$a === $b;  // evaluates to true
$a == $c;   // evaluates to true
$a === $c;  // evaluates to false
$a == $d;   // evaluates to false
$a === $d;  // evaluates to false