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179 lines
9.2 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>Execute custom request like any other eio_* call</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.eio-custom" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">eio_custom</h1>
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<p class="verinfo">(PECL eio >= 0.0.1dev)</p><p class="refpurpose"><span class="refname">eio_custom</span> — <span class="dc-title">Execute custom request like any other <em class="emphasis">eio_*</em> call</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.eio-custom-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>eio_custom</strong></span>
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( <span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$execute</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$pri</code></span>
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, <span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$callback</code></span>
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[, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$data</code><span class="initializer"> = NULL</span></span>
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] ) : <span class="type">resource</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>eio_custom()</strong></span> executes custom function specified by
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<code class="parameter">execute</code> processing it just like any other <em class="emphasis">eio_*</em> call.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.eio-custom-parameters">
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<h3 class="title">参数</h3>
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<dl>
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<dt>
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<code class="parameter">execute</code></dt>
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<dd>
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<p class="para">
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Specifies the request function that should match the following prototype:
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<div class="example-contents"><div class="cdata"><pre>
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mixed execute(mixed data);
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</pre></div></div>
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<code class="parameter">callback</code> is event completion callback that should match the following
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prototype:
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<div class="example-contents"><div class="cdata"><pre>
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void callback(mixed data, mixed result);
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</pre></div></div>
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<code class="parameter">data</code> is the data passed to
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<code class="parameter">execute</code> via <code class="parameter">data</code> argument
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without modifications
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<code class="parameter">result</code> value returned by <code class="parameter">execute</code>
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</p>
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</dd>
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<dt>
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<code class="parameter">pri</code></dt>
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<dd>
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<p class="para">请求的优先级：<strong><code>EIO_PRI_DEFAULT</code></strong>，<strong><code>EIO_PRI_MIN</code></strong>，<strong><code>EIO_PRI_MAX</code></strong> 或 <strong><code>NULL</code></strong>。如果是
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<strong><code>NULL</code></strong>，<code class="parameter">pri</code> 将设为
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<strong><code>EIO_PRI_DEFAULT</code></strong>。
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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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<code class="parameter">callback</code>
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函数在请求完成时被调用。其应匹配一下原型：<div class="example-contents"><div class="phpcode"><pre><span style="color: #000000">
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void callback(mixed $data, int $result[, resource $req]);</span>
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</pre></div></div>
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<dl>
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<dt>
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<code class="parameter">data</code></dt>
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<dd>
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<p class="para">传递给请求的用户数据。</p></dd>
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<dt>
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<code class="parameter">result</code></dt>
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<dd>
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<p class="para">针对请求的结果的值。通常是相应的系统调用返回的值。</p></dd>
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<dt>
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<code class="parameter">req</code></dt>
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<dd>
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<p class="para">可选的请求资源，可被 <span class="function"><a href="eio_get_last_error.html" class="function">eio_get_last_error()</a></span>
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之类的函数使用。</p></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">data</code></dt>
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<dd>
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<p class="para">
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Arbitrary variable passed to <code class="parameter">callback</code>.
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</p>
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</dd>
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</dl>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.eio-custom-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>eio_custom()</strong></span> returns request resource on success or <strong><code>FALSE</code></strong> on error.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.eio-custom-examples">
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<h3 class="title">范例</h3>
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<div class="example" id="example-4270">
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<p><strong>Example #1 <span class="function"><strong>eio_custom()</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 /></span><span style="color: #FF8000">/* Callback for the custom callback */<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">my_custom_callback</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$result</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">count</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">));<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">[</span><span style="color: #DD0000">'data_modified'</span><span style="color: #007700">]);<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">[</span><span style="color: #DD0000">'result'</span><span style="color: #007700">]);<br />}<br /><br /></span><span style="color: #FF8000">/* The custom request */<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">my_custom</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$result </span><span style="color: #007700">= array(<br /> </span><span style="color: #DD0000">'result' </span><span style="color: #007700">=> </span><span style="color: #0000BB">1001</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'data_modified' </span><span style="color: #007700">=> </span><span style="color: #DD0000">"my custom data"</span><span style="color: #007700">,<br /> );<br /><br /> return </span><span style="color: #0000BB">$result</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">$data </span><span style="color: #007700">= </span><span style="color: #DD0000">"my_custom_data"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$req </span><span style="color: #007700">= </span><span style="color: #0000BB">eio_custom</span><span style="color: #007700">(</span><span style="color: #DD0000">"my_custom"</span><span style="color: #007700">, </span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_custom_callback"</span><span style="color: #007700">, </span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$req</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">eio_event_loop</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 class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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resource(4) of type (EIO Request Descriptor)
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string(14) "my_custom_data"
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string(14) "my_custom_data"
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int(2)
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string(14) "my custom data"
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int(1001)
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</pre></div>
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</div>
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</div>
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</div>
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</div></div></div></body></html> |