PHPUnit: assert two arrays are equal, but order of elements not important

You can use the assertEqualsCanonicalizing or assertEqualsIgnoringCase methods to compare two arrays and ignore the order of the elements.

$expected = [3, 2, 1];
$actual = [1, 2, 3];
$this->assertEqualsCanonicalizing($expected, $actual);

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Alternatively, you can sort both arrays before comparing them using assertEquals method

$expected = [3, 2, 1];
sort($expected);
$actual = [1, 2, 3];
sort($actual);
$this->assertEquals($expected, $actual);