php-doc-en/reference/math/functions/rand.xml
Philip Olson 9fd7018715 Implement &note.randomseed; which states that random number generation is
automatic as of PHP 4.2.0


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@129466 c90b9560-bf6c-de11-be94-00142212c4b1
2003-05-30 19:48:38 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
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<refentry id="function.rand">
<refnamediv>
<refname>rand</refname>
<refpurpose>Generate a random value</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>rand</methodname>
<methodparam choice="opt"><type>int</type><parameter>min</parameter></methodparam>
<methodparam><type>int</type><parameter>max</parameter></methodparam>
</methodsynopsis>
<simpara>
If called without the optional <parameter>min</parameter>,
<parameter>max</parameter> arguments <function>rand</function>
returns a pseudo-random value between 0 and
<constant>RAND_MAX</constant>. If you want a random number
between 5 and 15 (inclusive), for example, use <literal>rand (5,
15)</literal>.
</simpara>
&note.randomseed;
<note>
<para>
In versions before 3.0.7 the meaning of
<parameter>max</parameter> was <parameter>range</parameter>. To
get the same results in these versions the short example should
be <literal>rand (5, 11)</literal> to get a random number
between 5 and 15.
</para>
</note>
<simpara>
See also <function>srand</function>,
<function>getrandmax</function>, and
<function>mt_rand</function>.
</simpara>
</refsect1>
</refentry>
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