awk for trimming a string up to the first, then second, then third... match

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mb_strripos

MB_STRRIPOS(3)								 1							    MB_STRRIPOS(3)

mb_strripos - Finds position of last occurrence of a string within another, case insensitive

SYNOPSIS

       int mb_strripos (string	$haystack, string  $needle, [int  $offset], [string  $encoding = mb_internal_encoding()])

DESCRIPTION

       mb_strripos(3) performs multi-byte safe strripos(3) operation based on number of characters. $needle position is counted from the beginning
       of $haystack. First character's position is 0. Second character position is 1. Unlike mb_strrpos(3), mb_strripos(3) is case-insensitive.

PARAMETERS

	      o $haystack
		- The string from which to get the position of the last occurrence of $needle

	      o $needle
		- The string to find in $haystack

	      o $offset
		- The position in $haystack to start searching

	      o $encoding
		- Character encoding name to use. If it is omitted, internal character encoding is used.

RETURN VALUES

	Return the numeric position of the last occurrence of $needle in the $haystack string, or FALSE if $needle is not found.

SEE ALSO

       strripos(3), strrpos(3), mb_strrpos(3).

PHP Documentation Group 													    MB_STRRIPOS(3)

UNIX for Dummies Questions & Answers