iconv_strrpos
(PHP 5)
iconv_strrpos — Finds the last occurrence of a needle within a haystack
說明
$haystack
, string $needle
[, string $charset = ini_get("iconv.internal_encoding")
] )
Finds the last occurrence of a needle
within a haystack.
In contrast to strrpos(), 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. The characters are counted
on the basis of the specified character set charset.
參數
-
haystack -
The entire string.
-
needle -
The searched substring.
-
charset -
If
charsetparameter is omitted,stringare 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.
回傳值
Returns the numeric position of the last occurrence of
needle in haystack.
If needle is not found,
iconv_strrpos() will return FALSE.
參見
- strrpos() - Find the position of the last occurrence of a substring in a string
- iconv_strpos() - Finds position of first occurrence of a needle within a haystack
- mb_strrpos() - Find position of last occurrence of a string in a string
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