mb_strrpos() returns the numeric position of
the last occurrence of
needle in the
haystack string. If
needle is not found, it returns FALSE.
mb_strrpos() performs multi-byte safe
strrpos() 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.
encoding is omitted, internal encoding
encoding is character encoding. If it is
not specified, internal character encoding is used.
Note: As of PHP 5.2.0
offsetmay be specified to begin searching an arbitrary number of characters into the string. Negative values will stop searching at an arbitrary point prior to the end of the string.
encodingparameter was moved from the third position to the fourth in PHP 5.2.0. For backward compatibility,
encodingcan be specified as the third parameter, but doing so is deprecated and will be removed in the future.