Sophie: php-manual-en-4.3.0-2mdk noarch

php-manual-en-4.3.0-2mdk.noarch.rpm

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>unpack</H1
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>    (PHP 3, PHP 4 )</P
>unpack&nbsp;--&nbsp;Unpack data from binary string</DIV
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>Description</H2
>array <B
CLASS="methodname"
>unpack</B
> ( string format, string data)<BR
></BR
><P
>&#13;     <B
CLASS="function"
>unpack()</B
> from binary string into array
     according to <TT
CLASS="parameter"
><I
>format</I
></TT
>. Returns array
     containing unpacked elements of binary string.
    </P
><P
>&#13;     <B
CLASS="function"
>unpack()</B
> works slightly different from Perl as
     the unpacked data is stored in an associative array. To
     accomplish this you have to name the different format codes and
     separate them by a slash /.
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>Example 1. <B
CLASS="function"
>unpack()</B
> format string</B
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><PRE
CLASS="php"
>$array = unpack ("c2chars/nint", $binarydata);</PRE
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><P
>&#13;       The resulting array will contain the entries "chars1",
       "chars2" and "int".
      </P
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>
    </P
><P
>&#13;     For an explanation of the format codes see also:
     <A
HREF="function.pack.html"
><B
CLASS="function"
>pack()</B
></A
>
    </P
><P
>&#13;     Note that PHP internally stores integral values as signed. If you
     unpack a large unsigned long and it is of the same size as PHP
     internally stored values the result will be a negative number
     even though unsigned unpacking was specified.
    </P
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