Sophie: php-manual-ro-0:20051028-1 noarch

php-manual-ro-20051028-1.noarch.rpm

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><H1
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>rand</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN50885"
></A
><P
>    (PHP 3, PHP 4 , PHP 5)</P
>rand&nbsp;--&nbsp;Generate a random integer</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN50888"
></A
><H2
>Description</H2
>int <B
CLASS="methodname"
>rand</B
> ( [int min, int max])<BR
></BR
><P
>&#13;     If called without the optional <VAR
CLASS="parameter"
>min</VAR
>,
     <VAR
CLASS="parameter"
>max</VAR
> arguments <B
CLASS="function"
>rand()</B
>
     returns a pseudo-random integer between 0 and
     <TT
CLASS="constant"
><B
>RAND_MAX</B
></TT
>.  If you want a random number
     between 5 and 15 (inclusive), for example, use <VAR
CLASS="literal"
>rand (5,
     15)</VAR
>.
    </P
><P
>&#13;     <TABLE
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><DIV
CLASS="example"
><A
NAME="AEN50906"
></A
><P
><B
>Exemplu 1. <B
CLASS="function"
>rand()</B
> example</B
></P
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">echo </font><font color="#0000BB">rand</font><font color="#007700">() . </font><font color="#DD0000">"\n"</font><font color="#007700">;<br />echo </font><font color="#0000BB">rand</font><font color="#007700">() . </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /><br />echo </font><font color="#0000BB">rand</font><font color="#007700">(</font><font color="#0000BB">5</font><font color="#007700">, </font><font color="#0000BB">15</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       The above example will output something similar to:
      </P
><TABLE
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><TD
><PRE
CLASS="screen"
>7771
22264
11</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
      On some platforms (such as Windows) <TT
CLASS="constant"
><B
>RAND_MAX</B
></TT
>
      is only 32768.  If you require a range larger than 32768, specifying
      <VAR
CLASS="parameter"
>min</VAR
> and <VAR
CLASS="parameter"
>max</VAR
> will allow
      you to create a range larger than RAND_MAX, or consider using
      <A
HREF="function.mt-rand.html"
><B
CLASS="function"
>mt_rand()</B
></A
> instead.
     </P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>As of PHP 4.2.0, there is no need 
to seed the random number generator with <A
HREF="function.srand.html"
><B
CLASS="function"
>srand()</B
></A
> or 
<A
HREF="function.mt-srand.html"
><B
CLASS="function"
>mt_srand()</B
></A
> as this is now done automatically.
</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
      In versions before 3.0.7 the meaning of
      <VAR
CLASS="parameter"
>max</VAR
> was <VAR
CLASS="parameter"
>range</VAR
>. To
      get the same results in these versions the short example should
      be <VAR
CLASS="literal"
>rand (5, 11)</VAR
> to get a random number
      between 5 and 15.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     See also:
     <A
HREF="function.srand.html"
><B
CLASS="function"
>srand()</B
></A
>,
     <A
HREF="function.getrandmax.html"
><B
CLASS="function"
>getrandmax()</B
></A
>, and
     <A
HREF="function.mt-rand.html"
><B
CLASS="function"
>mt_rand()</B
></A
>.
    </P
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