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# mb_strrpos

(PHP 4 >= 4.0.6, PHP 5)

mb_strrpos -- Find position of last occurrence of a string in a string

## 说明

int mb_strrpos ( string haystack, string needle [, int offset [, string encoding]] )

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.

If `encoding` is omitted, internal encoding is assumed.

`encoding` is character encoding. If it is not specified, internal character encoding is used.

> 注意: As of PHP 5.2.0 `offset` may 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.

> 注意: The `encoding` parameter was moved from the third position to the fourth in PHP 5.2.0. For backward compatibility, `encoding` can be specified as the third parameter, but doing so is deprecated and will be removed in the future.

## 更新日志

版本 | 说明
--- | ---
5.2.0 | Added the optional parameter `offset`.

## 参见

mb_strpos()
mb_internal_encoding()
strrpos()

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mb_strripos | 上一级 | mb_strstr