pfsockopen.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.pfsockopen" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>pfsockopen</refname>
  <refpurpose>打开持久的 Internet 或 Unix 套接字连接</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type class="union"><type>resource</type><type>false</type></type><methodname>pfsockopen</methodname>
   <methodparam><type>string</type><parameter>hostname</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>port</parameter><initializer>-1</initializer></methodparam>
   <methodparam choice="opt"><type>int</type><parameter role="reference">error_code</parameter><initializer>&null;</initializer></methodparam>
   <methodparam choice="opt"><type>string</type><parameter role="reference">error_message</parameter><initializer>&null;</initializer></methodparam>
   <methodparam choice="opt"><type class="union"><type>float</type><type>null</type></type><parameter>timeout</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <para>
   这个函数的作用与 <function>fsockopen</function>
   完全一样，不同的地方在于当在脚本执行完后，连接一直不会关闭。可以说它是
   <function>fsockopen</function> 的长连接版本。
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   对于其参数的信息，请参考 <function>fsockopen</function> 的文档。
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   <function>pfsockopen</function> 返回文件指针，可以跟其他文件函数（比如
   <function>fgets</function>、<function>fgetss</function>、<function>fwrite</function>、<function>fclose</function>
   和 <function>feof</function>）一起使用，&return.falseforfailure;。
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     <row>
      <entry>8.0.0</entry>
      <entry>
       <parameter>timeout</parameter> 现在可以为 null。
      </entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>

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

</refentry>
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