mb_strpos() returns the numeric position of
the first occurrence of
needle in the
haystack string. If
needle is not found, it returns FALSE.
mb_strpos() performs multi-byte safe
strpos() operation based on number of
needle position is counted
from the beginning of the
character's position is 0. Second character position is 1, and so
encoding is omitted, internal
character encoding is used.
offset is search offset. If it is not
specified, 0 is used.
encoding is character encoding name. If it
is omitted, internal character encoding is used.