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198 lines
7.4 KiB
HTML
198 lines
7.4 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Sends a message to a socket, whether it is connected or not</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.socket-sendto" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">socket_sendto</h1>
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<p class="verinfo">(PHP 4 >= 4.1.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">socket_sendto</span> — <span class="dc-title">Sends a message to a socket, whether it is connected or not </span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.socket-sendto-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>socket_sendto</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$socket</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$buf</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$len</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$flags</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$addr</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$port</code><span class="initializer"> = 0</span></span>
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] ) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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The function <span class="function"><strong>socket_sendto()</strong></span> sends
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<code class="parameter">len</code> bytes from <code class="parameter">buf</code>
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through the socket <code class="parameter">socket</code> to the
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<code class="parameter">port</code> at the address <code class="parameter">addr</code>.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.socket-sendto-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">socket</code></dt>
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<dd>
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<p class="para">
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A valid socket resource created using <span class="function"><a href="socket_create.html" class="function">socket_create()</a></span>.
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</p>
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</dd>
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<dt>
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<code class="parameter">buf</code></dt>
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<dd>
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<p class="para">
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The sent data will be taken from buffer <code class="parameter">buf</code>.
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</p>
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</dd>
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<dt>
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<code class="parameter">len</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">len</code> bytes from <code class="parameter">buf</code> will be
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sent.
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</p>
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</dd>
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<dt>
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<code class="parameter">flags</code></dt>
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<dd>
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<p class="para">
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The value of <code class="parameter">flags</code> can be any combination of
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the following flags, joined with the binary OR (<em>|</em>)
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operator.
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<table class="doctable table">
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<caption><strong>Possible values for <code class="parameter">flags</code></strong></caption>
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<tbody class="tbody">
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<tr>
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<td><strong><code>MSG_OOB</code></strong></td>
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<td>
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Send OOB (out-of-band) data.
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</td>
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</tr>
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<tr>
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<td><strong><code>MSG_EOR</code></strong></td>
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<td>
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Indicate a record mark. The sent data completes the record.
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</td>
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</tr>
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<tr>
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<td><strong><code>MSG_EOF</code></strong></td>
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<td>
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Close the sender side of the socket and include an appropriate
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notification of this at the end of the sent data. The sent data
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completes the transaction.
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</td>
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</tr>
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<tr>
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<td><strong><code>MSG_DONTROUTE</code></strong></td>
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<td>
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Bypass routing, use direct interface.
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</dd>
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<dt>
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<code class="parameter">addr</code></dt>
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<dd>
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<p class="para">
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IP address of the remote host.
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</p>
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</dd>
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<dt>
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<code class="parameter">port</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">port</code> is the remote port number at which the data
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will be sent.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.socket-sendto-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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<span class="function"><strong>socket_sendto()</strong></span> returns the number of bytes sent to the
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remote host, or <strong><code>FALSE</code></strong> if an error occurred.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.socket-sendto-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-5605">
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<p><strong>Example #1 <span class="function"><strong>socket_sendto()</strong></span> Example</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /> $sock </span><span style="color: #007700">= </span><span style="color: #0000BB">socket_create</span><span style="color: #007700">(</span><span style="color: #0000BB">AF_INET</span><span style="color: #007700">, </span><span style="color: #0000BB">SOCK_DGRAM</span><span style="color: #007700">, </span><span style="color: #0000BB">SOL_UDP</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$msg </span><span style="color: #007700">= </span><span style="color: #DD0000">"Ping !"</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$len </span><span style="color: #007700">= </span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$msg</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">socket_sendto</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">, </span><span style="color: #0000BB">$msg</span><span style="color: #007700">, </span><span style="color: #0000BB">$len</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">'127.0.0.1'</span><span style="color: #007700">, </span><span style="color: #0000BB">1223</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">socket_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.socket-sendto-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="socket_send.html" class="function" rel="rdfs-seeAlso">socket_send()</a> - Sends data to a connected socket</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |