mirror of
https://github.com/sigmasternchen/php-doc-en
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@120845 c90b9560-bf6c-de11-be94-00142212c4b1
75 lines
1.9 KiB
XML
75 lines
1.9 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/datetime.xml, last change in rev 1.2 -->
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<refentry id="function.microtime">
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<refnamediv>
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<refname>microtime</refname>
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<refpurpose>
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Return current UNIX timestamp with microseconds</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>string</type><methodname>microtime</methodname>
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<void/>
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</methodsynopsis>
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<para>
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Returns the string "msec sec" where sec is the current time
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measured in the number of seconds since the Unix Epoch (0:00:00
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January 1, 1970 GMT), and msec is the microseconds part. This
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function is only available on operating systems that support the
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gettimeofday() system call.
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</para>
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<para>
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Both portions of the string are returned in units of seconds.
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<example>
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<title><function>microtime</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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function getmicrotime(){
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list($usec, $sec) = explode(" ",microtime());
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return ((float)$usec + (float)$sec);
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}
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$time_start = getmicrotime();
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for ($i=0; $i < 1000; $i++){
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//do nothing, 1000 times
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}
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$time_end = getmicrotime();
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$time = $time_end - $time_start;
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echo "Did nothing in $time seconds";
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?>
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]]>
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</programlisting>
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</example>
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</para>
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<para>
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See also <function>time</function>.
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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:"../../../../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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