mirror of
https://github.com/sigmasternchen/php-doc-en
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c79b43a897
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@84364 c90b9560-bf6c-de11-be94-00142212c4b1
77 lines
2.2 KiB
XML
77 lines
2.2 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.3 $ -->
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<!-- splitted from ./en/functions/math.xml, last change in rev 1.2 -->
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<refentry id="function.round">
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<refnamediv>
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<refname>round</refname>
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<refpurpose>Rounds a float</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>float</type><methodname>round</methodname>
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<methodparam><type>float</type><parameter>val</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>precision</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns the rounded value of <parameter>val</parameter> to
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specified <parameter>precision</parameter>
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(number of digits after the decimal point).
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<parameter>precision</parameter> can also be negative or zero (default).
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</para>
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<para>
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<caution>
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<simpara>
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PHP doesn't handle strings like <literal>"12,300.2"</literal> correctly
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by default. See <link linkend="language.types.string.conversion"
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>converting from strings</link>.
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</simpara>
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</caution>
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</para>
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<para>
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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echo round(3.4); // 3
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echo round(3.5); // 4
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echo round(3.6); // 4
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echo round(3.6, 0); // 4
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echo round(1.95583, 2); // 1.96
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echo round(1241757, -3); // 1242000
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]]>
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</programlisting>
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</informalexample>
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</para>
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<note>
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<simpara>
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The <parameter>precision</parameter> parameter is only
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available in PHP 4.
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</simpara>
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</note>
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<simpara>
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See also <function>ceil</function> and
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<function>floor</function>.
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</simpara>
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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:"../../../../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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