Function utf8_locate_next_chr
Given a string and any byte index, returns the byte index of the start of the next UTF-8 character, relative to supplied position. If the next character begins at the same place as the supplied byte index, that byte index will be returned.
		
		Package: utf8
Author: Chris Smith<chris@jalakai.co.uk>
Located at vendor/joomla/string/src/phputf8/utils/position.php
	
	Author: Chris Smith<chris@jalakai.co.uk>
Located at vendor/joomla/string/src/phputf8/utils/position.php
Parameters summary
| string | & $str | |
| integer | $idx | byte index in the string | 
Return value summary
| 
			integer
		 | byte index of start of next UTF-8 character | 
