Two different versions noticed for trailing coma

From manual page: https://php.net/functions.arguments

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Two different versions are noticed for the same specificity (trailing coma):

1. "As of PHP 7.3.0, it is possible to have a trailing comma in the argument list for a function calls (...)"
2. "As of PHP 8.0.0, the list of function parameters may include a trailing comma (...)"