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# iconv_strrpos

(PHP 5)

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

## 说明

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.

## 参数

`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.

## 返回值

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`.

警告
本函数可能返回布尔值 `FALSE`，但也可能返回一个与 `FALSE` 等值的非布尔值，例如 `0` 或者 ""。请参阅布尔类型章节以获取更多信息。应使用 === 运算符来测试本函数的返回值。

## 参见

strrpos()
iconv_strpos()
mb_strrpos()

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