imap-ping.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.imap-ping" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>imap_ping</refname>
  <refpurpose>Check if the IMAP stream is still active</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>imap_ping</methodname>
   <methodparam><type>IMAP\Connection</type><parameter>imap</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>imap_ping</function> pings the stream to see if it's still
   active. It may discover new mail; this is the preferred method for a
   periodic "new mail check" as well as a "keep alive" for servers which
   have inactivity timeout.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    &imap.imap-parameter.imap;
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns &true; if the stream is still alive, &false; otherwise.
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     &imap.changelog.imap-param;
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>
 
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>imap_ping</function> Example</title>
    <programlisting role="php">
<![CDATA[
<?php

$imap = imap_open("{imap.example.org}", "mailadmin", "password");

// after some sleeping
if (!imap_ping($imap)) {
    // do some stuff to reconnect
}

?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>
</refentry>
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