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

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><H1
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>strtr</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN228353"
></A
><P
>    (PHP 3, PHP 4, PHP 5)</P
>strtr&nbsp;--&nbsp;Translate certain characters</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN228356"
></A
><H2
>Description</H2
>string <B
CLASS="methodname"
>strtr</B
> ( string str, string from, string to )<BR
></BR
>string <B
CLASS="methodname"
>strtr</B
> ( string str, array replace_pairs )<BR
></BR
><P
>&#13;     This function returns a copy of <CODE
CLASS="parameter"
>str</CODE
>,
     translating all occurrences of each character in
     <CODE
CLASS="parameter"
>from</CODE
> to the corresponding character in
     <CODE
CLASS="parameter"
>to</CODE
>.
    </P
><P
>&#13;     If <CODE
CLASS="parameter"
>from</CODE
> and <CODE
CLASS="parameter"
>to</CODE
> are
     different lengths, the extra characters in the longer of the two
     are ignored.
     <TABLE
WIDTH="100%"
BORDER="0"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN228386"
></A
><P
><B
>例 1. <B
CLASS="function"
>strtr()</B
> example</B
></P
><TABLE
BORDER="0"
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$addr </font><font color="#007700">= </font><font color="#0000BB">strtr</font><font color="#007700">(</font><font color="#0000BB">$addr</font><font color="#007700">, </font><font color="#DD0000">"äåö"</font><font color="#007700">, </font><font color="#DD0000">"aao"</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     <B
CLASS="function"
>strtr()</B
> may be called with only two
     arguments. If called with two arguments it behaves in a new way:
     <CODE
CLASS="parameter"
>from</CODE
> then has to be an array that contains
     string -&#62; string pairs that will be replaced in the source
     string. <B
CLASS="function"
>strtr()</B
> will always look for the
     longest possible match first and will *NOT* try to replace stuff
     that it has already worked on.
    </P
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><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN228394"
></A
><P
><B
>例 2. <B
CLASS="function"
>strtr()</B
> example with two arguments</B
></P
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$trans </font><font color="#007700">= array(</font><font color="#DD0000">"hello" </font><font color="#007700">=&gt; </font><font color="#DD0000">"hi"</font><font color="#007700">, </font><font color="#DD0000">"hi" </font><font color="#007700">=&gt; </font><font color="#DD0000">"hello"</font><font color="#007700">);<br />echo </font><font color="#0000BB">strtr</font><font color="#007700">(</font><font color="#DD0000">"hi all, I said hello"</font><font color="#007700">, </font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;     This will show: 
    </P
><TABLE
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><TR
><TD
><PRE
CLASS="screen"
>hello all, I said hi</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      This optional <CODE
CLASS="parameter"
>to</CODE
> and 
      <CODE
CLASS="parameter"
>from</CODE
> parameters were added in PHP 4.0.0
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     See also <A
HREF="function.ereg-replace.html"
><B
CLASS="function"
>ereg_replace()</B
></A
>.
    </P
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