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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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iconv_strpos上一级iconv_substr