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>iconv_strpos</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN84837"
></A
><P
> (PHP 5)</P
>iconv_strpos -- Finds position of first occurrence of a needle within a haystack</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN84840"
></A
><H2
>说明</H2
>int <B
CLASS="methodname"
>iconv_strpos</B
> ( string haystack, string needle [, int offset [, string charset]] )<BR
></BR
><P
> Finds position of first occurrence of a needle within a haystack.
</P
><P
> In contrast to <A
HREF="function.strpos.html"
><B
CLASS="function"
>strpos()</B
></A
>, the return value of
<B
CLASS="function"
>iconv_strpos()</B
> 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 <CODE
CLASS="parameter"
>charset</CODE
>.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN84862"
></A
><H2
>参数</H2
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>haystack</CODE
></DT
><DD
><P
> The entire string.
</P
></DD
><DT
><CODE
CLASS="parameter"
>needle</CODE
></DT
><DD
><P
> The searched substring.
</P
></DD
><DT
><CODE
CLASS="parameter"
>offset</CODE
></DT
><DD
><P
> The optional <CODE
CLASS="parameter"
>offset</CODE
> parameter specifies
the position from which the search should be performed.
</P
></DD
><DT
><CODE
CLASS="parameter"
>charset</CODE
></DT
><DD
><P
> If <CODE
CLASS="parameter"
>charset</CODE
> parameter is omitted,
<CODE
CLASS="parameter"
>string</CODE
> are assumed to be encoded in
<A
HREF="ref.iconv.html#iconv.configuration"
>iconv.internal_encoding</A
>.
</P
></DD
></DL
></DIV
>
</P
><P
> If <CODE
CLASS="parameter"
>haystack</CODE
> or <CODE
CLASS="parameter"
>needle</CODE
> is
not a string, it is converted to a string and applied as the ordinal
value of a character.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN84893"
></A
><H2
>返回值</H2
><P
> Returns the numeric position of the first occurrence of
<CODE
CLASS="parameter"
>needle</CODE
> in <CODE
CLASS="parameter"
>haystack</CODE
>.
</P
><P
> If <CODE
CLASS="parameter"
>needle</CODE
> is not found,
<B
CLASS="function"
>iconv_strpos()</B
> will return <TT
CLASS="constant"
><B
>FALSE</B
></TT
>.
</P
><DIV
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><P
></P
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ALIGN="CENTER"
><B
>警告</B
></TD
></TR
><TR
><TD
ALIGN="LEFT"
><P
>本函数可能返回布尔值
<TT
CLASS="constant"
><B
>FALSE</B
></TT
>，但也可能返回一个与 <TT
CLASS="constant"
><B
>FALSE</B
></TT
> 等值的非布尔值，例如
<TT
CLASS="literal"
>0</TT
> 或者 ""。请参阅<A
HREF="language.types.boolean.html"
>布尔类型</A
>章节以获取更多信息。应使用
<A
HREF="language.operators.comparison.html"
>=== 运算符</A
>来测试本函数的返回值。</P
></TD
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></DIV
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN84909"
></A
><H2
>参见</H2
><P
> <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.strpos.html"
><B
CLASS="function"
>strpos()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.iconv-strrpos.html"
><B
CLASS="function"
>iconv_strrpos()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.mb-strpos.html"
><B
CLASS="function"
>mb_strpos()</B
></A
></TD
></TR
></TBODY
></TABLE
><P
></P
>
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