PHP Manual
iconv 函数
Finds the last occurrence of a needle within a haystack

iconv_strrpos

(PHP 5, PHP 7)

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

说明

iconv_strrpos ( string $haystack , string $needle [, string $charset = ini_get("iconv.internal_encoding") ] ) : int

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.

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.

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

Warning

此函数可能返回布尔值 FALSE，但也可能返回等同于 FALSE 的非布尔值。请阅读布尔类型章节以获取更多信息。应使用 === 运算符来测试此函数的返回值。

参见

strrpos() - 计算指定字符串在目标字符串中最后一次出现的位置
iconv_strpos() - Finds position of first occurrence of a needle within a haystack
mb_strrpos() - 查找字符串在一个字符串中最后出现的位置

php cubrid 函数 get last error message for the most recent function call php ibm db2 函数 returns a string containing the last sql statement error message php eio 函数 change file last access and modification times php eio 函数 returns string describing the last error associated with a request resource php enchant 函数 returns the last error of the broker php frontbase 函数 get the number of rows affected by the last statement php grapheme 函数 returns part of haystack string from the first occurrence of case insensitive needle to the end of haystack php grapheme 函数 find position in grapheme units of last occurrence of a case insensitive string php grapheme 函数 find position in grapheme units of last occurrence of a string php grapheme 函数 returns part of haystack string from the first occurrence of needle to the end of haystack php iconv 函数返回字符串的字符数统计 php iconv 函数 finds position of first occurrence of a needle within a haystack php iconv 函数 finds the last occurrence of a needle within a haystack php iconv 函数截取字符串的部分 php intl 函数 get description of the last error php maxdb 函数 returns a string description for last statement error php maxdb 函数 returns the number of warnings from the last query for the given link php session pgsql 函数 increments error counts and sets last error message php sqlite 函数 finds whether or not more rows are available php uopz 函数 retrieve the last set exit status