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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>List all the handlers available</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.dba-firstkey.html">dba_firstkey</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.dba-insert.html">dba_insert</a></div> <div class="up"><a href="ref.dba.html">DBA Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.dba-handlers" class="refentry"> <div class="refnamediv"> <h1 class="refname">dba_handlers</h1> <p class="verinfo">(PHP 4 >= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">dba_handlers</span> — <span class="dc-title">List all the handlers available</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">array</span> <span class="methodname"><b><b>dba_handlers</b></b></span> ([ <span class="methodparam"><span class="type">bool</span> <tt class="parameter">$full_info</tt></span> ] )</div> <p class="para rdfs-comment"> <b>dba_handlers()</b> list all the handlers supported by this extension. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">full_info</tt></i></span> <dd> <p class="para"> Turns on/off full information display in the result. The default is <b><tt>FALSE</tt></b>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns an array of database handlers. If <i><tt class="parameter">full_info</tt></i> is set to <b><tt>TRUE</tt></b>, the array will be associative with the handlers names as keys, and their version information as value. Otherwise, the result will be an indexed array of handlers names. </p> <blockquote><p><b class="note">Note</b>: When the internal cdb library is used you will see <i>cdb</i> and <i>cdb_make</i>. <br /> </p></blockquote> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>dba_handlers()</b> Example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">"Available DBA handlers:\n"</span><span style="color: #007700">;<br />foreach (</span><span style="color: #0000BB">dba_handlers</span><span style="color: #007700">(</span><span style="color: #0000BB">true</span><span style="color: #007700">) as </span><span style="color: #0000BB">$handler_name </span><span style="color: #007700">=> </span><span style="color: #0000BB">$handler_version</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">// clean the versions<br /> </span><span style="color: #0000BB">$handler_version </span><span style="color: #007700">= </span><span style="color: #0000BB">str_replace</span><span style="color: #007700">(</span><span style="color: #DD0000">'$'</span><span style="color: #007700">, </span><span style="color: #DD0000">''</span><span style="color: #007700">, </span><span style="color: #0000BB">$handler_version</span><span style="color: #007700">);<br /> echo </span><span style="color: #DD0000">" - $handler_name: $handler_version\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output something similar to:</p></div> <div class="example-contents"><pre><div class="cdata"><pre>Available DBA handlers: - cdb: 0.75, Revision: 1.3.2.3 - cdb_make: 0.75, Revision: 1.2.2.4 - db2: Sleepycat Software: Berkeley DB 2.7.7: (08/20/99) - inifile: 1.0, Revision: 1.6.2.3 - flatfile: 1.0, Revision: 1.5.2.4 </pre></div> </pre></div> </div> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.dba-firstkey.html">dba_firstkey</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.dba-insert.html">dba_insert</a></div> <div class="up"><a href="ref.dba.html">DBA Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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