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<?xml version='1.0' encoding='iso-8859-1'?>
<!-- $Revision: 1.8 $ -->
<refentry xml:id="function.time-nanosleep" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>time_nanosleep</refname>
<refpurpose>Delay for a number of seconds and nanoseconds</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>mixed</type><methodname>time_nanosleep</methodname>
<methodparam><type>int</type><parameter>seconds</parameter></methodparam>
<methodparam><type>int</type><parameter>nanoseconds</parameter></methodparam>
</methodsynopsis>
<para>
Delays program execution for the given number of
<parameter>seconds</parameter> and <parameter>nanoseconds</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>seconds</parameter></term>
<listitem>
<para>
Must be a positive integer.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>nanoseconds</parameter></term>
<listitem>
<para>
Must be a positive integer less than 1 billion.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
<para>
If the delay was interrupted by a signal, an associative array will be
returned with the components:
<itemizedlist>
<listitem>
<simpara>
<literal>seconds</literal> - number of seconds remaining in
the delay
</simpara>
</listitem>
<listitem>
<simpara>
<literal>nanoseconds</literal> - number of nanoseconds
remaining in the delay
</simpara>
</listitem>
</itemizedlist>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>time_nanosleep</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// Careful! This won't work as expected if an array is returned
if (time_nanosleep(0, 500000000)) {
echo "Slept for half a second.\n";
}
// This is better:
if (time_nanosleep(0, 500000000) === true) {
echo "Slept for half a second.\n";
}
// And this is the best:
$nano = time_nanosleep(2, 100000);
if ($nano === true) {
echo "Slept for 2 seconds, 100 milliseconds.\n";
} elseif ($nano === false) {
echo "Sleeping failed.\n";
} elseif (is_array($nano)) {
$seconds = $nano['seconds'];
$nanoseconds = $nano['nanoseconds'];
echo "Interrupted by a signal.\n";
echo "Time remaining: $seconds seconds, $nanoseconds nanoseconds.";
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
¬e.no-windows;
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<function>sleep</function>,
<function>usleep</function>,
<function>set_time_limit</function>
</para>
</refsect1>
</refentry>
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