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Improved GMP random functions added in 5.6.2
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@335072 c90b9560-bf6c-de11-be94-00142212c4b1
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96
reference/gmp/functions/gmp_random_bits.xml
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96
reference/gmp/functions/gmp_random_bits.xml
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.gmp-random-bits">
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<refnamediv>
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<refname>gmp_random_bits</refname>
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<refpurpose>Random number</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>GMP</type><methodname>gmp_random_bits</methodname>
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<methodparam><type>integer</type><parameter>bits</parameter></methodparam>
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</methodsynopsis>
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<para>
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Generate a random number. The number will be between
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0 and (2 ** <parameter>bits</parameter>) - 1.
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</para>
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<para>
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<parameter>bits</parameter> must greater than 0, and the maximum value is restricted by available memory.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>bits</parameter></term>
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<listitem>
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<para>
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The number of bits.
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</para>
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&gmp.parameter;
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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A random GMP number.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title><function>gmp_random_bits</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$rand1 = gmp_random_bits(3); // random number from 0 to 7
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$rand2 = gmp_random_bits(5); // random number from 0 to 31
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echo gmp_strval($rand1) . "\n";
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echo gmp_strval($rand2) . "\n";
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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3
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15
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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104
reference/gmp/functions/gmp_random_range.xml
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104
reference/gmp/functions/gmp_random_range.xml
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.gmp-random-range">
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<refnamediv>
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<refname>gmp_random_range</refname>
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<refpurpose>Random number</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>GMP</type><methodname>gmp_random_range</methodname>
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<methodparam><type>GMP</type><parameter>min</parameter></methodparam>
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<methodparam><type>GMP</type><parameter>max</parameter></methodparam>
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</methodsynopsis>
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<para>
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Generate a random number. The number will be between
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<parameter>min</parameter> and <parameter>max</parameter>.
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</para>
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<para>
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<parameter>min</parameter> and <parameter>max</parameter> can both be negative but <parameter>min</parameter> must always be less than <parameter>max</parameter>.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>min</parameter></term>
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<listitem>
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<para>
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A GMP number representing the lower bound for the random number
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>max</parameter></term>
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<listitem>
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<para>
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A GMP number representing the upper bound for the random number
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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A random GMP number.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title><function>gmp_random_range</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$rand1 = gmp_random_range(0, 100); // random number between 0 and 100
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$rand2 = gmp_random_range(-100, -10); // random number between -100 and -10
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echo gmp_strval($rand1) . "\n";
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echo gmp_strval($rand2) . "\n";
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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42
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-67
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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@ -38,6 +38,8 @@
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<function name='gmp_powm' from='PHP 4 >= 4.0.4, PHP 5'/>
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<function name='gmp_prob_prime' from='PHP 4 >= 4.0.4, PHP 5'/>
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<function name='gmp_random' from='PHP 4 >= 4.0.4, PHP 5'/>
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<function name='gmp_random_bits' from='PHP 5 >= 5.6.2'/>
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<function name='gmp_random_range' from='PHP 5 >= 5.6.2'/>
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<function name='gmp_root' from='PHP 5 >= 5.6.0'/>
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<function name='gmp_rootrem' from='PHP 5 >= 5.6.0'/>
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<function name='gmp_scan0' from='PHP 4 >= 4.0.4, PHP 5'/>
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