Sophie: php-manual-zh-5.2.4-1mdv2008.1 noarch

php-manual-zh-5.2.4-1mdv2008.1.noarch.rpm

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>strstr</H1
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><P
>    (PHP 3, PHP 4, PHP 5)</P
>strstr&nbsp;--&nbsp;Find first occurrence of a string</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN228211"
></A
><H2
>Description</H2
>string <B
CLASS="methodname"
>strstr</B
> ( string haystack, string needle )<BR
></BR
><P
>&#13;     Returns part of <CODE
CLASS="parameter"
>haystack</CODE
> string from the
     first occurrence of <CODE
CLASS="parameter"
>needle</CODE
> to the end of
     <CODE
CLASS="parameter"
>haystack</CODE
>.
    </P
><P
>&#13;     If <CODE
CLASS="parameter"
>needle</CODE
> is not found, returns <TT
CLASS="constant"
><B
>FALSE</B
></TT
>.
    </P
><P
>&#13;     If <CODE
CLASS="parameter"
>needle</CODE
> is not a string, it is converted
     to an integer and applied as the ordinal value of a character.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      This function is case-sensitive. For case-insensitive searches, use
      <A
HREF="function.stristr.html"
><B
CLASS="function"
>stristr()</B
></A
>.
     </P
></BLOCKQUOTE
></DIV
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><A
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><P
><B
>例 1. <B
CLASS="function"
>strstr()</B
> example</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$email </font><font color="#007700">= </font><font color="#DD0000">'user@example.com'</font><font color="#007700">;<br /></font><font color="#0000BB">$domain </font><font color="#007700">= </font><font color="#0000BB">strstr</font><font color="#007700">(</font><font color="#0000BB">$email</font><font color="#007700">, </font><font color="#DD0000">'@'</font><font color="#007700">);<br />echo </font><font color="#0000BB">$domain</font><font color="#007700">; </font><font color="#FF8000">// prints @example.com<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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> 
    </P
><P
>&#13;     <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
       If you only want to determine if a particular <CODE
CLASS="parameter"
>needle</CODE
>
       occurs within <CODE
CLASS="parameter"
>haystack</CODE
>, use the faster and less memory
       intensive function <A
HREF="function.strpos.html"
><B
CLASS="function"
>strpos()</B
></A
> instead.
      </P
></BLOCKQUOTE
></DIV
>
    </P
><P
>&#13;     <B
CLASS="function"
>strstr()</B
> has been binary safe since PHP 4.3.0
    </P
><P
>&#13;     See also <A
HREF="function.preg-match.html"
><B
CLASS="function"
>preg_match()</B
></A
>,
     <A
HREF="function.stristr.html"
><B
CLASS="function"
>stristr()</B
></A
>, <A
HREF="function.strpos.html"
><B
CLASS="function"
>strpos()</B
></A
>,
     <A
HREF="function.strrchr.html"
><B
CLASS="function"
>strrchr()</B
></A
>, and <A
HREF="function.substr.html"
><B
CLASS="function"
>substr()</B
></A
>.
    </P
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