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# iconv_strpos

(PHP 5)

iconv_strpos -- Finds position of first occurrence of a needle within a haystack

## Description

int iconv_strpos ( string haystack, string needle [, int offset [, string charset]] )

Returns the numeric position of the first occurrence of needle in haystack.

The optional offset parameter specifies the position from which the search should be performed.

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

警告
這個函數可能回傳布林值 `FALSE`，但也可能回傳一個同於 `FALSE` 的非布林值，像是0或 ""請參考Booleans此節有更多資訊。使用 === 運算子來測試這個函數的回傳值。

If haystack or needle is not a string, it is converted to a string and applied as the ordinal value of a character.

In contrast to strpos(), the return value of iconv_strpos() 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.

If charset parameter is omitted, string are assumed to be encoded in iconv.internal_charset.

See also strpos(), iconv_strrpos() and mb_strpos().

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