Find position of first occurrence of string in a string

说明

int mb_strpos ( string $haystack , string $needle [, int $offset = 0 [, string $encoding ]] )

Finds position of the first occurrence of a string in a string.

Performs a multi-byte safe strpos() operation based on number of characters. The first character's position is 0, the second character position is 1, and so on.

参数

haystack: The string being checked.
needle: The string to find in haystack. In contrast with strpos(), numeric values are not applied as the ordinal value of a character.
offset: The search offset. If it is not specified, 0 is used.
encoding: encoding 参数为字符编码。如果省略，则使用内部字符编码。

返回值

Returns the numeric position of the first occurrence of needle in the haystack string. If needle is not found, it returns FALSE.

参见

mb_internal_encoding() - Set/Get internal character encoding
strpos() - 查找字符串首次出现的位置