iconv_strpos

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

この関数は論理値 FALSEを返す可能性がありますが、FALSEとして評価される 0や""といった値を返す可能性もあります。詳細については論理値の章を参照してください。この関数の返り値を調べるには ===演算子を使用して下さい。

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.