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200 lines
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HTML
200 lines
5.3 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>Sets up callback for variable change notification</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.gupnp-service-proxy-add-notify" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">gupnp_service_proxy_add_notify</h1>
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<p class="verinfo">(PECL gupnp >= 0.1.0)</p><p class="refpurpose"><span class="refname">gupnp_service_proxy_add_notify</span> — <span class="dc-title">Sets up callback for variable change notification</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.gupnp-service-proxy-add-notify-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>gupnp_service_proxy_add_notify</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$proxy</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$value</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$type</code></span>
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, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$callback</code></span>
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[, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$arg</code></span>
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] ) : <span class="type">bool</span></div>
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<p class="para rdfs-comment">
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Sets up callback to be called whenever a change notification for variable is recieved.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.gupnp-service-proxy-add-notify-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">proxy</code></dt>
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<dd>
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<p class="para">
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A service proxy identifier.
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</p>
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</dd>
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<dt>
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<code class="parameter">value</code></dt>
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<dd>
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<p class="para">
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The variable to add notification for.
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</p>
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</dd>
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<dt>
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<code class="parameter">type</code></dt>
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<dd>
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<p class="para">
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The type of the variable. Type can be one of the following values:
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<dl>
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<dt>
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<strong><code>GUPNP_TYPE_BOOLEAN</code></strong></dt>
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<dd>
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<span class="simpara">
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Type of the variable is boolean.
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</span>
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</dd>
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<dt>
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<strong><code>GUPNP_TYPE_INT</code></strong></dt>
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<dd>
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<span class="simpara">
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Type of the variable is integer.
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</span>
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</dd>
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<dt>
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<strong><code>GUPNP_TYPE_LONG</code></strong></dt>
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<dd>
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<span class="simpara">
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Type of the variable is long.
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</span>
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</dd>
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<dt>
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<strong><code>GUPNP_TYPE_DOUBLE</code></strong></dt>
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<dd>
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<span class="simpara">
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Type of the variable is double.
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</span>
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</dd>
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<dt>
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<strong><code>GUPNP_TYPE_FLOAT</code></strong></dt>
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<dd>
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<span class="simpara">
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Type of the variable is float.
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</span>
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</dd>
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<dt>
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<strong><code>GUPNP_TYPE_STRING</code></strong></dt>
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<dd>
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<span class="simpara">
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Type of the variable is string.
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</span>
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</dd>
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</dl>
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</p>
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</dd>
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<dt>
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<code class="parameter">callback</code></dt>
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<dd>
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<p class="para">
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The callback to call when variable changes. Typically, callback function
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takes on three parameters. The <code class="parameter">variable</code>
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parameter being the first, <code class="parameter">value</code> parameter
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being the second, and the <code class="parameter">arg</code> is third.
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</p>
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</dd>
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<dt>
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<code class="parameter">arg</code></dt>
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<dd>
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<p class="para">
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User data for <code class="parameter">callback</code>.
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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.gupnp-service-proxy-add-notify-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.gupnp-service-proxy-add-notify-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="gupnp_service_proxy_remove_notify.html" class="function" rel="rdfs-seeAlso">gupnp_service_proxy_remove_notify()</a> - Cancels the variable change notification</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> |