I dont think we should add such functionality that already can be done with a few lines of php code already, combining strpos/stripos with a foreach and you should get your result:

<?php
	function strpos_array_impl($case_sensitive, $haystack, Array $needle, &$found = NULL, $position = 0)
	{
		if(!sizeof($needle) || empty($haystack))
		{
			return(false);
		}

		$strpos_function = ($case_sensitive ? 'strpos' : 'stripos');

		foreach($needle as $temp)
		{
			if(($pos = $strpos_function($haystack, $temp, $found, $position) !== false)
			{
				return($pos);
			}
		}

		return(false);
	}

	function strpos_array($haystack, Array $needle, &$found = NULL, $position = 0)
	{
		return(strpos_array_impl(false, $haystack, $needle, $found, $position));
	}

	function stripos_array($haystack, Array $needle, &$found = NULL, $position = 0)
	{
		return(strpos_array_impl(true, $haystack, $needle, $found, $position));
	}
?>

Dont take that code for granted, as i wrote it on my cell so it might be buggy, but should show what I mean

Yes, such functionality can be done by strpos() foreach needle in the array. But I see at least two ways to make such search more optimal:
1. Make limit for maximal possible position after which we should not search a needles. The strpos() has no such limit, so we need to make substr() after we find next nearest needle.
2. Check length of a next needle and remaining substring to search in.

Of course I can write the function, which do what I need, but I think, that it won't more optimal in PHP code, then build-in PCRE or build-in function I request.

This appears to be a controversial feature addition, and as such
deserves to be discussed on the PHP internals mailing list[1].
Feel free to post there; for the time being I'm suspending this
ticket.

[1] <https://www.php.net/mailing-lists.php#internals>