Forum und email

iconv_strrpos

(PHP 5)

iconv_strrpos — Finds the last occurrence of a needle within a haystack

Description

int iconv_strrpos ( string $haystack , string $needle [, string $charset ] )

In contrast to strpos(), the return value of iconv_strrpos() is the number of characters that appear before the needle, rather than the offset in bytes to the position where the needle has been found.

Parameters

haystack

The entire string.

needle

The searched substring.

charset

If charset parameter is omitted, string are assumed to be encoded in iconv.internal_encoding.

If haystack or needle is not a string, it is converted to a string and applied as the ordinal value of a character.

Return Values

Returns the numeric position of the last occurrence of needle in haystack . The characters are counted on the basis of the specified character set charset .

If needle is not found, iconv_strrpos() will return FALSE.

Warning

這個函數可能回傳布林值 FALSE,但也可能回傳一個同於 FALSE 的非布林值,像是0或 ""請參考Booleans此節有更多資訊。使用 === 運算子來測試這個函數的回傳值。