<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.getprotobyname" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>getprotobyname</refname>
  <refpurpose>Get protocol number associated with protocol name</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type class="union"><type>int</type><type>false</type></type><methodname>getprotobyname</methodname>
   <methodparam><type>string</type><parameter>protocol</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>getprotobyname</function> returns the protocol number
   associated with the protocol <parameter>protocol</parameter> as per
   <filename>/etc/protocols</filename>.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>protocol</parameter></term>
     <listitem>
      <para>
       The protocol name.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns the protocol number, &return.falseforfailure;.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>getprotobyname</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$protocol = 'tcp';
$get_prot = getprotobyname($protocol);
if ($get_prot === FALSE) {
    echo 'Invalid Protocol';
} else {
    echo 'Protocol #' . $get_prot;
}
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>getprotobynumber</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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