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123 lines
4.3 KiB
HTML
123 lines
4.3 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>为资源流设置阻塞或者阻塞模式</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.stream-set-blocking" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">stream_set_blocking</h1>
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<p class="verinfo">(PHP 4 >= 4.3.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">stream_set_blocking</span> — <span class="dc-title">为资源流设置阻塞或者阻塞模式</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.stream-set-blocking-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>stream_set_blocking</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$stream</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$mode</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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为 <code class="parameter">stream</code> 设置阻塞或者阻塞模。
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</p>
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<p class="para">
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此函数适用于支持非阻塞模式的任何资源流（常规文件，套接字资源流等）。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.stream-set-blocking-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">stream</code></dt>
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<dd>
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<p class="para">
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资源流。
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</p>
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</dd>
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<dt>
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<code class="parameter">mode</code></dt>
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<dd>
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<p class="para">
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如果 <code class="parameter">mode</code> 为0，资源流将会被转换为非阻塞模式；如果是1，资源流将会被转换为阻塞模式。
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该参数的设置将会影响到像 <span class="function"><a href="fgets.html" class="function">fgets()</a></span> 和 <span class="function"><a href="fread.html" class="function">fread()</a></span> 这样的函数从资源流里读取数据。
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在非阻塞模式下，调用 <span class="function"><a href="fgets.html" class="function">fgets()</a></span> 总是会立即返回；而在阻塞模式下，将会一直等到从资源流里面获取到数据才能返回。
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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.stream-set-blocking-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 changelog" id="refsect1-function.stream-set-blocking-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>4.3.0</td>
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<td>
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在PHP 4.3.0之前，该函数只支持套接字资源流。
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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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</div>
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<div class="refsect1 notes" id="refsect1-function.stream-set-blocking-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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该函数之前叫作 <span class="function"><a href="set_socket_blocking.html" class="function">set_socket_blocking()</a></span> 后来又叫做 <span class="function"><a href="socket_set_blocking.html" class="function">socket_set_blocking()</a></span> ，但是这种用法都已经被废弃。
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.stream-set-blocking-seealso">
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<h3 class="title">参见</h3>
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="stream_select.html" class="function" rel="rdfs-seeAlso">stream_select()</a> - Runs the equivalent of the select() system call on the given
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arrays of streams with a timeout specified by tv_sec and tv_usec</span></li>
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</ul>
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</div>
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</div></div></div></body></html> |