<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Network Functions</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="函数参考" HREF="funcref.html"><LINK REL="PREVIOUS" TITLE="ncurses_wvline" HREF="function.ncurses-wvline.html"><LINK REL="NEXT" TITLE="checkdnsrr" HREF="function.checkdnsrr.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="reference" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.ncurses-wvline.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.checkdnsrr.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="reference" ><A NAME="ref.network" ></A ><DIV CLASS="TITLEPAGE" ><H1 CLASS="title" >CII. Network Functions</H1 ><DIV CLASS="PARTINTRO" ><A NAME="AEN148459" ></A ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="network.intro" >简介</A ></H1 ><P > </P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="network.requirements" >需求</A ></H1 ><P >要编译本扩展模块无需外部库文件。</P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="network.installation" >安装</A ></H1 ><P >本扩展模块作为 PHP 内核的一部分,无需安装即可使用。</P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="network.configuration" >运行时配置</A ></H1 ><P >这些函数的行为受 <TT CLASS="filename" >php.ini</TT > 的影响。</P ><P > <DIV CLASS="table" ><A NAME="AEN148474" ></A ><P ><B >表 1. Network Configuration Options</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Default</TH ><TH >Changeable</TH ><TH >Changelog</TH ></TR ></THEAD ><TBODY ><TR ><TD >define_syslog_variables</TD ><TD >"0"</TD ><TD >PHP_INI_ALL</TD ><TD > </TD ></TR ></TBODY ></TABLE ></DIV > 有关 PHP_INI_* 常量进一步的细节与定义参见<A HREF="ini.html" >附录 H</A >。 </P ><P >以下是配置选项的简要解释。</P ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><A NAME="ini.define-syslog-variables" ></A ><CODE CLASS="parameter" >define_syslog_variables</CODE > <A HREF="language.types.boolean.html" ><B CLASS="type" >boolean</B ></A ></DT ><DD ><P > Whether or not to define the various syslog variables (e.g. $LOG_PID, $LOG_CRON, etc.). Turning it off is a good idea performance-wise. At runtime, you can define these variables by calling <A HREF="function.define-syslog-variables.html" ><B CLASS="function" >define_syslog_variables()</B ></A >. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="network.resources" >资源类型</A ></H1 ><P > This extension defines a file pointer resource returned by <A HREF="function.fsockopen.html" ><B CLASS="function" >fsockopen()</B ></A > and <A HREF="function.pfsockopen.html" ><B CLASS="function" >pfsockopen()</B ></A >. </P ></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="network.constants" >预定义常量</A ></H1 ><P >以下常量作为 PHP 核心的一部分一直有效。</P ><DIV CLASS="table" ><A NAME="AEN148508" ></A ><P ><B >表 2. <A HREF="function.openlog.html" ><B CLASS="function" >openlog()</B ></A > Options</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >Constant</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD >LOG_CONS</TD ><TD > if there is an error while sending data to the system logger, write directly to the system console </TD ></TR ><TR ><TD >LOG_NDELAY</TD ><TD > open the connection to the logger immediately </TD ></TR ><TR ><TD >LOG_ODELAY</TD ><TD > (default) delay opening the connection until the first message is logged </TD ></TR ><TR ><TD >LOG_NOWAIT</TD ><TD > </TD ></TR ><TR ><TD >LOG_PERROR</TD ><TD >print log message also to standard error</TD ></TR ><TR ><TD >LOG_PID</TD ><TD >include PID with each message</TD ></TR ></TBODY ></TABLE ></DIV ><DIV CLASS="table" ><A NAME="AEN148535" ></A ><P ><B >表 3. <A HREF="function.openlog.html" ><B CLASS="function" >openlog()</B ></A > Facilities</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >Constant</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD >LOG_AUTH</TD ><TD > security/authorization messages (use LOG_AUTHPRIV instead in systems where that constant is defined) </TD ></TR ><TR ><TD >LOG_AUTHPRIV</TD ><TD >security/authorization messages (private)</TD ></TR ><TR ><TD >LOG_CRON</TD ><TD >clock daemon (cron and at)</TD ></TR ><TR ><TD >LOG_DAEMON</TD ><TD >other system daemons</TD ></TR ><TR ><TD >LOG_KERN</TD ><TD >kernel messages</TD ></TR ><TR ><TD >LOG_LOCAL0 ... LOG_LOCAL7</TD ><TD >reserved for local use, these are not available in Windows</TD ></TR ><TR ><TD >LOG_LPR</TD ><TD >line printer subsystem</TD ></TR ><TR ><TD >LOG_MAIL</TD ><TD >mail subsystem</TD ></TR ><TR ><TD >LOG_NEWS</TD ><TD >USENET news subsystem</TD ></TR ><TR ><TD >LOG_SYSLOG</TD ><TD >messages generated internally by syslogd</TD ></TR ><TR ><TD >LOG_USER</TD ><TD >generic user-level messages</TD ></TR ><TR ><TD >LOG_UUCP</TD ><TD >UUCP subsystem</TD ></TR ></TBODY ></TABLE ></DIV ><DIV CLASS="table" ><A NAME="AEN148580" ></A ><P ><B >表 4. <A HREF="function.syslog.html" ><B CLASS="function" >syslog()</B ></A > Priorities (in descending order)</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >Constant</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD >LOG_EMERG</TD ><TD >system is unusable</TD ></TR ><TR ><TD >LOG_ALERT</TD ><TD >action must be taken immediately</TD ></TR ><TR ><TD >LOG_CRIT</TD ><TD >critical conditions</TD ></TR ><TR ><TD >LOG_ERR</TD ><TD >error conditions</TD ></TR ><TR ><TD >LOG_WARNING</TD ><TD >warning conditions</TD ></TR ><TR ><TD >LOG_NOTICE</TD ><TD >normal, but significant, condition</TD ></TR ><TR ><TD >LOG_INFO</TD ><TD >informational message</TD ></TR ><TR ><TD >LOG_DEBUG</TD ><TD >debug-level message</TD ></TR ></TBODY ></TABLE ></DIV ><DIV CLASS="table" ><A NAME="AEN148613" ></A ><P ><B >表 5. <A HREF="function.dns-get-record.html" ><B CLASS="function" >dns_get_record()</B ></A > Options</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><THEAD ><TR ><TH >Constant</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD >DNS_A</TD ><TD >IPv4 Address Resource</TD ></TR ><TR ><TD >DNS_MX</TD ><TD >Mail Exchanger Resource</TD ></TR ><TR ><TD >DNS_CNAME</TD ><TD >Alias (Canonical Name) Resource</TD ></TR ><TR ><TD >DNS_NS</TD ><TD >Authoritative Name Server Resource</TD ></TR ><TR ><TD >DNS_PTR</TD ><TD >Pointer Resource</TD ></TR ><TR ><TD >DNS_HINFO</TD ><TD >Host Info Resource (See IANA's <A HREF="http://www.iana.org/assignments/operating-system-names" TARGET="_top" >Operating System Names</A > for the meaning of these values)</TD ></TR ><TR ><TD >DNS_SOA</TD ><TD >Start of Authority Resource</TD ></TR ><TR ><TD >DNS_TXT</TD ><TD >Text Resource</TD ></TR ><TR ><TD >DNS_ANY</TD ><TD >Any Resource Record. On most systems this returns all resource records, however it should not be counted upon for critical uses. Try DNS_ALL instead.</TD ></TR ><TR ><TD >DNS_AAAA</TD ><TD >IPv6 Address Resource</TD ></TR ><TR ><TD >DNS_ALL</TD ><TD >Iteratively query the name server for each available record type.</TD ></TR ></TBODY ></TABLE ></DIV ></DIV ></DIV ><DIV CLASS="TOC" ><DL ><DT ><B >目录</B ></DT ><DT ><A HREF="function.checkdnsrr.html" >checkdnsrr</A > -- Check DNS records corresponding to a given Internet host name or IP address </DT ><DT ><A HREF="function.closelog.html" >closelog</A > -- Close connection to system logger</DT ><DT ><A HREF="function.debugger-off.html" >debugger_off</A > -- Disable internal PHP debugger (PHP 3)</DT ><DT ><A HREF="function.debugger-on.html" >debugger_on</A > -- Enable internal PHP debugger (PHP 3)</DT ><DT ><A HREF="function.define-syslog-variables.html" >define_syslog_variables</A > -- Initializes all syslog related constants</DT ><DT ><A HREF="function.dns-check-record.html" >dns_check_record</A > -- Synonym for <A HREF="function.checkdnsrr.html" ><B CLASS="function" >checkdnsrr()</B ></A ></DT ><DT ><A HREF="function.dns-get-mx.html" >dns_get_mx</A > -- Synonym for <A HREF="function.getmxrr.html" ><B CLASS="function" >getmxrr()</B ></A ></DT ><DT ><A HREF="function.dns-get-record.html" >dns_get_record</A > -- Fetch DNS Resource Records associated with a hostname </DT ><DT ><A HREF="function.fsockopen.html" >fsockopen</A > -- Open Internet or Unix domain socket connection </DT ><DT ><A HREF="function.gethostbyaddr.html" >gethostbyaddr</A > -- Get the Internet host name corresponding to a given IP address </DT ><DT ><A HREF="function.gethostbyname.html" >gethostbyname</A > -- Get the IP address corresponding to a given Internet host name </DT ><DT ><A HREF="function.gethostbynamel.html" >gethostbynamel</A > -- Get a list of IP addresses corresponding to a given Internet host name </DT ><DT ><A HREF="function.getmxrr.html" >getmxrr</A > -- Get MX records corresponding to a given Internet host name </DT ><DT ><A HREF="function.getprotobyname.html" >getprotobyname</A > -- Get protocol number associated with protocol name </DT ><DT ><A HREF="function.getprotobynumber.html" >getprotobynumber</A > -- Get protocol name associated with protocol number </DT ><DT ><A HREF="function.getservbyname.html" >getservbyname</A > -- Get port number associated with an Internet service and protocol </DT ><DT ><A HREF="function.getservbyport.html" >getservbyport</A > -- Get Internet service which corresponds to port and protocol </DT ><DT ><A HREF="function.header.html" >header</A > -- Send a raw HTTP header</DT ><DT ><A HREF="function.headers-list.html" >headers_list</A > -- Returns a list of response headers sent (or ready to send)</DT ><DT ><A HREF="function.headers-sent.html" >headers_sent</A > -- Checks if or where headers have been sent</DT ><DT ><A HREF="function.inet-ntop.html" >inet_ntop</A > -- Converts a packed internet address to a human readable representation </DT ><DT ><A HREF="function.inet-pton.html" >inet_pton</A > -- Converts a human readable IP address to its packed in_addr representation </DT ><DT ><A HREF="function.ip2long.html" >ip2long</A > -- Converts a string containing an (IPv4) Internet Protocol dotted address into a proper address </DT ><DT ><A HREF="function.long2ip.html" >long2ip</A > -- Converts an (IPv4) Internet network address into a string in Internet standard dotted format </DT ><DT ><A HREF="function.openlog.html" >openlog</A > -- Open connection to system logger</DT ><DT ><A HREF="function.pfsockopen.html" >pfsockopen</A > -- Open persistent Internet or Unix domain socket connection </DT ><DT ><A HREF="function.setcookie.html" >setcookie</A > -- Send a cookie</DT ><DT ><A HREF="function.setrawcookie.html" >setrawcookie</A > -- Send a cookie without urlencoding the cookie value</DT ><DT ><A HREF="function.socket-get-status.html" >socket_get_status</A > -- 别名 <A HREF="function.stream-get-meta-data.html" ><B CLASS="function" >stream_get_meta_data()</B ></A ></DT ><DT ><A HREF="function.socket-set-blocking.html" >socket_set_blocking</A > -- 别名 <A HREF="function.stream-set-blocking.html" ><B CLASS="function" >stream_set_blocking()</B ></A ></DT ><DT ><A HREF="function.socket-set-timeout.html" >socket_set_timeout</A > -- 别名 <A HREF="function.stream-set-timeout.html" ><B CLASS="function" >stream_set_timeout()</B ></A ></DT ><DT ><A HREF="function.syslog.html" >syslog</A > -- Generate a system log message</DT ></DL ></DIV ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.ncurses-wvline.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.checkdnsrr.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR 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