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

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

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><H1
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NAME="function.stristr"
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>stristr</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN227702"
></A
><P
>    (PHP 3 &#62;= 3.0.6, PHP 4, PHP 5)</P
>stristr&nbsp;--&nbsp;
     Case-insensitive <A
HREF="function.strstr.html"
><B
CLASS="function"
>strstr()</B
></A
>
    </DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN227706"
></A
><H2
>Description</H2
>string <B
CLASS="methodname"
>stristr</B
> ( string haystack, string needle )<BR
></BR
><P
>&#13;     Returns all of <CODE
CLASS="parameter"
>haystack</CODE
> from the first
     occurrence of <CODE
CLASS="parameter"
>needle</CODE
> to the end.
     <CODE
CLASS="parameter"
>needle</CODE
> and <CODE
CLASS="parameter"
>haystack</CODE
>
     are examined in a case-insensitive manner.
    </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
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN227728"
></A
><P
><B
>例 1. <B
CLASS="function"
>stristr()</B
> example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />&nbsp;&nbsp;$email </font><font color="#007700">= </font><font color="#DD0000">'USER@EXAMPLE.com'</font><font color="#007700">;<br />&nbsp;&nbsp;echo </font><font color="#0000BB">stristr</font><font color="#007700">(</font><font color="#0000BB">$email</font><font color="#007700">, </font><font color="#DD0000">'e'</font><font color="#007700">);<br /></font><font color="#FF8000">// outputs ER@EXAMPLE.com<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
> 
    </P
><P
>&#13;     <TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN227733"
></A
><P
><B
>例 2. Testing if a string is found or not</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />&nbsp;&nbsp;$string </font><font color="#007700">= </font><font color="#DD0000">'Hello World!'</font><font color="#007700">;<br />&nbsp;&nbsp;if(</font><font color="#0000BB">stristr</font><font color="#007700">(</font><font color="#0000BB">$string</font><font color="#007700">, </font><font color="#DD0000">'earth'</font><font color="#007700">) === </font><font color="#0000BB">FALSE</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">'"earth" not found in string'</font><font color="#007700">;<br />&nbsp;&nbsp;}<br /></font><font color="#FF8000">// outputs: "earth" not found in string<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
> 
    </P
><P
>&#13;     <TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN227737"
></A
><P
><B
>例 3. Using a non "string" needle</B
></P
><TABLE
BORDER="0"
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />&nbsp;&nbsp;$string </font><font color="#007700">= </font><font color="#DD0000">'APPLE'</font><font color="#007700">;<br />&nbsp;&nbsp;echo </font><font color="#0000BB">stristr</font><font color="#007700">(</font><font color="#0000BB">$string</font><font color="#007700">, </font><font color="#0000BB">97</font><font color="#007700">); </font><font color="#FF8000">// 97 = lowercase a<br />// outputs: APPLE<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
> 
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>本函数可安全用于二进制对象。</P
></BLOCKQUOTE
></DIV
><P
>&#13;     See also 
     <A
HREF="function.strstr.html"
><B
CLASS="function"
>strstr()</B
></A
>,
     <A
HREF="function.strrchr.html"
><B
CLASS="function"
>strrchr()</B
></A
>, 
     <A
HREF="function.substr.html"
><B
CLASS="function"
>substr()</B
></A
>, and
     <A
HREF="function.preg-match.html"
><B
CLASS="function"
>preg_match()</B
></A
>.
    </P
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