3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = json_decode('[{"first_name":"Rebecca"},{"first_name":"amy"},{"first_name":"Amy"},{"first_name":"stacy"}]', true); usort( $data, fn($a, $b) => strcasecmp($a['first_name'], $b['first_name']) ?: strcmp($a['first_name'], $b['first_name']) ); var_export($data);

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