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141 lines
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141 lines
10 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>Installs a proxy for mysqlnd connections</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.mysqlnd-uh-set-connection-proxy" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">mysqlnd_uh_set_connection_proxy</h1>
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<p class="verinfo">(PECL mysqlnd-uh >= 1.0.0-alpha)</p><p class="refpurpose"><span class="refname">mysqlnd_uh_set_connection_proxy</span> — <span class="dc-title">Installs a proxy for mysqlnd connections</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.mysqlnd-uh-set-connection-proxy-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>mysqlnd_uh_set_connection_proxy</strong></span>
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( <span class="methodparam"><span class="type"><a href="class.mysqlnduhconnection.html" class="type MysqlndUhConnection">MysqlndUhConnection</a></span> <code class="parameter reference">&$connection_proxy</code></span>
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[, <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <code class="parameter reference">&$mysqli_connection</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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Installs a proxy object to hook mysqlnd's connection objects methods.
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Once installed, the proxy will be used for all MySQL connections
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opened with <a href="ref.mysqli.html" class="link">mysqli</a>,
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<a href="ref.mysql.html" class="link">mysql</a> or
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<a href="ref.pdo_mysql.html" class="link">PDO_MYSQL</a>, assuming that the listed
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extensions are compiled to use the <a href="book.mysqlnd.html" class="link">mysqlnd</a>
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library.
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</p>
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<p class="para">
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The function can be disabled with
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<em><a href="mysqlnd-uh.configuration.html#ini.mysqlnd-uh.enable" class="link">mysqlnd_uh.enable</a></em>.
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If <em><a href="mysqlnd-uh.configuration.html#ini.mysqlnd-uh.enable" class="link">mysqlnd_uh.enable</a></em>
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is set to <strong><code>FALSE</code></strong> the function will not install the proxy and
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always return <strong><code>TRUE</code></strong>. Additionally, an error of the
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type <em>E_WARNING</em> may be emitted. The error message may
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read like <em>PHP Warning: mysqlnd_uh_set_connection_proxy(): (Mysqlnd User Handler)
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The plugin has been disabled by setting the configuration parameter mysqlnd_uh.enable = false.
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The proxy has not been installed [...]</em>.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.mysqlnd-uh-set-connection-proxy-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">connection_proxy</code></dt>
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<dd>
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<p class="para">
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A proxy object of type <a href="class.mysqlnduhconnection.html" class="classname">MysqlndUhConnection</a>.
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</p>
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</dd>
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<dt>
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<code class="parameter">mysqli_connection</code></dt>
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<dd>
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<p class="para">
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Object of type <em>mysqli</em>.
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If given, the proxy will be set for this particular connection only.
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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.mysqlnd-uh-set-connection-proxy-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns <strong><code>TRUE</code></strong> on success.
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Otherwise, returns <strong><code>FALSE</code></strong>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.mysqlnd-uh-set-connection-proxy-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-2362">
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<p><strong>Example #1 <span class="function"><strong>mysqlnd_uh_set_connection_proxy()</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 />$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"root"</span><span style="color: #007700">, </span><span style="color: #DD0000">""</span><span style="color: #007700">, </span><span style="color: #DD0000">"test"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT 'No proxy installed, yet'"</span><span style="color: #007700">);<br /><br />class </span><span style="color: #0000BB">proxy </span><span style="color: #007700">extends </span><span style="color: #0000BB">MysqlndUhConnection </span><span style="color: #007700">{<br /> public function </span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #0000BB">$res</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s(%s)\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">__METHOD__</span><span style="color: #007700">, </span><span style="color: #0000BB">var_export</span><span style="color: #007700">(</span><span style="color: #0000BB">func_get_args</span><span style="color: #007700">(), </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br /> </span><span style="color: #0000BB">$ret </span><span style="color: #007700">= </span><span style="color: #0000BB">parent</span><span style="color: #007700">::</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #0000BB">$res</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s returns %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">__METHOD__</span><span style="color: #007700">, </span><span style="color: #0000BB">var_export</span><span style="color: #007700">(</span><span style="color: #0000BB">$ret</span><span style="color: #007700">, </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br /> return </span><span style="color: #0000BB">$ret</span><span style="color: #007700">;<br /> }<br />}<br /></span><span style="color: #0000BB">mysqlnd_uh_set_connection_proxy</span><span style="color: #007700">(new </span><span style="color: #0000BB">proxy</span><span style="color: #007700">());<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT 'mysqlnd rocks!'"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$mysql </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"root"</span><span style="color: #007700">, </span><span style="color: #DD0000">""</span><span style="color: #007700">, </span><span style="color: #DD0000">"test"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">mysql_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT 'Ahoy Andrey!'"</span><span style="color: #007700">, </span><span style="color: #0000BB">$mysql</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$pdo </span><span style="color: #007700">= new </span><span style="color: #0000BB">PDO</span><span style="color: #007700">(</span><span style="color: #DD0000">"mysql:host=localhost;dbname=test"</span><span style="color: #007700">, </span><span style="color: #DD0000">"root"</span><span style="color: #007700">, </span><span style="color: #DD0000">""</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$pdo</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT 'Moin Johannes!'"</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>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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proxy::query(array (
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0 => NULL,
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1 => 'SELECT \'mysqlnd rocks!\'',
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))
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proxy::query returns true
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proxy::query(array (
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0 => NULL,
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1 => 'SELECT \'Ahoy Andrey!\'',
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))
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proxy::query returns true
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proxy::query(array (
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0 => NULL,
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1 => 'SELECT \'Moin Johannes!\'',
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))
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proxy::query returns true
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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.mysqlnd-uh-set-connection-proxy-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">
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<span class="function"><a href="mysqlnd_uh_set_statement_proxy.html" class="function" rel="rdfs-seeAlso">mysqlnd_uh_set_statement_proxy()</a> - Installs a proxy for mysqlnd statements</span>
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</li>
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<li class="member">
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<em><a href="mysqlnd-uh.configuration.html#ini.mysqlnd-uh.enable" class="link">mysqlnd_uh.enable</a></em>
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</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> |