transports.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>List of Supported Socket Transports</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="filters.encryption.html">Encryption Filters</a></div> <div class="next" style="text-align: right; float: right;"><a href="transports.unix.html">Unix Domain: Unix and UDG</a></div> <div class="up"><a href="appendices.html">Appendices</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div> <h1>List of Supported Socket Transports</h1><h2>Table of Contents</h2><ul class="chunklist chunklist_appendix"><li><a href="transports.unix.html">Unix Domain: Unix and UDG</a></li></ul> <p class="para"> The following is a list of the various URL style socket transports that PHP has built-in for use with the streams based socket functions such as <a href="function.fsockopen.html" class="function">fsockopen()</a>, and <a href="function.stream-socket-client.html" class="function">stream_socket_client()</a>. These transports do <em class="emphasis">not</em> apply to the <a href="ref.sockets.html" class="link">Sockets Extension</a>. </p> <p class="para"> For a list of transports installed in your version of PHP use <a href="function.stream-get-transports.html" class="function">stream_get_transports()</a>. </p> <div id="transports.inet" class="section"> <h2 class="title">Internet Domain: TCP, UDP, SSL, and TLS</h2> <p class="simpara"> PHP 4, PHP 5, PHP 6. <i>ssl://</i> & <i>tls://</i> since PHP 4.3.0 <i>sslv2://</i> & <i>sslv3://</i> since PHP 5.0.2 </p> <blockquote><p><b class="note">Note</b>: <span class="simpara"> If no transport is specified, <i>tcp://</i> will be assumed. </span> </p></blockquote> <ul class="itemizedlist"> <li class="listitem"><span class="simpara"><i>127.0.0.1</i></span></li> <li class="listitem"><span class="simpara"><i>fe80::1</i></span></li> <li class="listitem"><span class="simpara"><i>www.example.com</i></span></li> <li class="listitem"><span class="simpara"><i>tcp://127.0.0.1</i></span></li> <li class="listitem"><span class="simpara"><i>tcp://fe80::1</i></span></li> <li class="listitem"><span class="simpara"><i>tcp://www.example.com</i></span></li> <li class="listitem"><span class="simpara"><i>udp://www.example.com</i></span></li> <li class="listitem"><span class="simpara"><i>ssl://www.example.com</i></span></li> <li class="listitem"><span class="simpara"><i>sslv2://www.example.com</i></span></li> <li class="listitem"><span class="simpara"><i>sslv3://www.example.com</i></span></li> <li class="listitem"><span class="simpara"><i>tls://www.example.com</i></span></li> </ul> <p class="simpara"> Internet Domain sockets expect a port number in addition to a target address. In the case of <a href="function.fsockopen.html" class="function">fsockopen()</a> this is specified in a second parameter and therefore does not impact the formatting of transport URL. With <a href="function.stream-socket-client.html" class="function">stream_socket_client()</a> and related functions as with traditional URLs however, the port number is specified as a suffix of the transport URL delimited by a colon. </p> <ul class="itemizedlist"> <li class="listitem"><span class="simpara"><i>tcp://127.0.0.1:80</i></span></li> <li class="listitem"><span class="simpara"><i>tcp://[fe80::1]:80</i></span></li> <li class="listitem"><span class="simpara"><i>tcp://www.example.com:80</i></span></li> </ul> <blockquote><p><b class="note">Note</b>: <b>IPv6 numeric addresses with port numbers</b><br /> <span class="simpara"> In the second example above, while the IPv4 and hostname examples are left untouched apart from the addition of their colon and portnumber, the IPv6 address is wrapped in square brackets: <i>[fe80::1]</i>. This is to distinguish between the colons used in an IPv6 address and the colon used to delimit the portnumber. </span> </p></blockquote> <p class="simpara"> The <i>ssl://</i> and <i>tls://</i> transports (available only when openssl support is compiled into PHP) are extensions of the <i>tcp://</i> transport which include SSL encryption. Since PHP 4.3.0 OpenSSL support must be statically compiled into PHP, since PHP 5.0.0 it may be compiled as a module or statically. </p> <p class="simpara"> <i>ssl://</i> will attempt to negotiate an SSL V2, or SSL V3 connection depending on the capabilities and preferences of the remote host. <i>sslv2://</i> and <i>sslv3://</i> will select the SSL V2 or SSL V3 protocol explicitly. </p> </div> </div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="filters.encryption.html">Encryption Filters</a></div> <div class="next" style="text-align: right; float: right;"><a href="transports.unix.html">Unix Domain: Unix and UDG</a></div> <div class="up"><a href="appendices.html">Appendices</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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