mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-18 13:57:03 +08:00
147 lines
7.2 KiB
HTML
147 lines
7.2 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>Converts a MySQL connection handle into a mysqlnd connection handle</title>
|
|
</head>
|
|
<body class="docs"><div id="layout">
|
|
<div id="layout-content"><div id="function.mysqlnd-uh-convert-to-mysqlnd" class="refentry">
|
|
<div class="refnamediv">
|
|
<h1 class="refname">mysqlnd_uh_convert_to_mysqlnd</h1>
|
|
<p class="verinfo">(PECL mysqlnd-uh >= 1.0.0-alpha)</p><p class="refpurpose"><span class="refname">mysqlnd_uh_convert_to_mysqlnd</span> — <span class="dc-title">Converts a MySQL connection handle into a mysqlnd connection handle</span></p>
|
|
|
|
</div>
|
|
|
|
<div class="refsect1 description" id="refsect1-function.mysqlnd-uh-convert-to-mysqlnd-description">
|
|
<h3 class="title">说明</h3>
|
|
<div class="methodsynopsis dc-description">
|
|
|
|
<span class="methodname"><strong>mysqlnd_uh_convert_to_mysqlnd</strong></span>
|
|
( <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <code class="parameter reference">&$mysql_connection</code></span>
|
|
) : <span class="type">resource</span></div>
|
|
|
|
<p class="para rdfs-comment">
|
|
Converts a MySQL connection handle into a mysqlnd connection handle.
|
|
After conversion you can execute mysqlnd library calls on the connection handle.
|
|
This can be used to access mysqlnd functionality not made available
|
|
through user space API calls.
|
|
</p>
|
|
<p class="para">
|
|
The function can be disabled with
|
|
<em><a href="mysqlnd-uh.configuration.html#ini.mysqlnd-uh.enable" class="link">mysqlnd_uh.enable</a></em>.
|
|
If <em><a href="mysqlnd-uh.configuration.html#ini.mysqlnd-uh.enable" class="link">mysqlnd_uh.enable</a></em>
|
|
is set to <strong><code>FALSE</code></strong> the function will not install the proxy and
|
|
always return <strong><code>TRUE</code></strong>. Additionally, an error of the
|
|
type <em>E_WARNING</em> may be emitted. The error message may
|
|
read like <em>PHP Warning: mysqlnd_uh_convert_to_mysqlnd(): (Mysqlnd User Handler)
|
|
The plugin has been disabled by setting the configuration parameter mysqlnd_uh.enable = false.
|
|
You are not allowed to call this function [...]</em>.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 parameters" id="refsect1-function.mysqlnd-uh-convert-to-mysqlnd-parameters">
|
|
<h3 class="title">参数</h3>
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">MySQL connection handle</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
A MySQL connection handle of type mysql, mysqli or PDO_MySQL.
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
</dl>
|
|
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 returnvalues" id="refsect1-function.mysqlnd-uh-convert-to-mysqlnd-returnvalues">
|
|
<h3 class="title">返回值</h3>
|
|
<p class="para">
|
|
A mysqlnd connection handle.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 changelog" id="refsect1-function.mysqlnd-uh-convert-to-mysqlnd-changelog">
|
|
<h3 class="title">更新日志</h3>
|
|
<p class="para">
|
|
<table class="doctable informaltable">
|
|
|
|
<thead>
|
|
<tr>
|
|
<th>版本</th>
|
|
<th>说明</th>
|
|
</tr>
|
|
|
|
</thead>
|
|
|
|
<tbody class="tbody">
|
|
<tr>
|
|
<td>5.4.0</td>
|
|
<td>
|
|
The <code class="parameter">mysql_connection</code> parameter can now be of type
|
|
<em>mysql</em>, <em>PDO_MySQL</em>, or <em>mysqli</em>.
|
|
Before, only the <em>mysqli</em> type was allowed.
|
|
</td>
|
|
</tr>
|
|
|
|
</tbody>
|
|
|
|
</table>
|
|
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 examples" id="refsect1-function.mysqlnd-uh-convert-to-mysqlnd-examples">
|
|
<h3 class="title">范例</h3>
|
|
<p class="para">
|
|
<div class="example" id="example-2361">
|
|
<p><strong>Example #1 <span class="function"><strong>mysqlnd_uh_convert_to_mysqlnd()</strong></span> example</strong></p>
|
|
<div class="example-contents">
|
|
<div class="phpcode"><pre><span style="color: #000000">
|
|
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">/* PDO user API gives no access to connection thread id */<br /></span><span style="color: #0000BB">$mysql_connection </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 /><br /></span><span style="color: #FF8000">/* Convert PDO MySQL handle to mysqlnd handle */<br /></span><span style="color: #0000BB">$mysqlnd </span><span style="color: #007700">= </span><span style="color: #0000BB">mysqlnd_uh_convert_to_mysqlnd</span><span style="color: #007700">(</span><span style="color: #0000BB">$mysql_connection</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Create Proxy to call mysqlnd connection class methods */<br /></span><span style="color: #0000BB">$obj </span><span style="color: #007700">= new </span><span style="color: #0000BB">MySQLndUHConnection</span><span style="color: #007700">();<br /></span><span style="color: #FF8000">/* Call mysqlnd_conn::get_thread_id */<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$obj</span><span style="color: #007700">-></span><span style="color: #0000BB">getThreadId</span><span style="color: #007700">(</span><span style="color: #0000BB">$mysqlnd</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">/* Use SQL to fetch connection thread id */<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$mysql_connection</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT CONNECTION_ID()"</span><span style="color: #007700">)-></span><span style="color: #0000BB">fetchAll</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?></span>
|
|
</span>
|
|
</pre></div>
|
|
</div>
|
|
|
|
<div class="example-contents"><p>以上例程会输出：</p></div>
|
|
<div class="example-contents screen">
|
|
<div class="cdata"><pre>
|
|
int(27054)
|
|
array(1) {
|
|
[0]=>
|
|
array(2) {
|
|
["CONNECTION_ID()"]=>
|
|
string(5) "27054"
|
|
[0]=>
|
|
string(5) "27054"
|
|
}
|
|
}
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 seealso" id="refsect1-function.mysqlnd-uh-convert-to-mysqlnd-seealso">
|
|
<h3 class="title">参见</h3>
|
|
<p class="para">
|
|
<ul class="simplelist">
|
|
<li class="member">
|
|
<em><a href="mysqlnd-uh.configuration.html#ini.mysqlnd-uh.enable" class="link">mysqlnd_uh.enable</a></em>
|
|
</li>
|
|
</ul>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
</div></div></div></body></html> |