📄 function.pg-version.html
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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>Returns an array with client, protocol and server version (when 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="ref.pgsql.html">PostgreSQL Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="book.sqlite.html">SQLite</a></div> <div class="up"><a href="ref.pgsql.html">PostgreSQL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.pg-version" class="refentry"> <div class="refnamediv"> <h1 class="refname">pg_version</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">pg_version</span> — <span class="dc-title"> Returns an array with client, protocol and server version (when 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>pg_version</b></b></span> ([ <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$connection</tt></span> ] )</div> <p class="para rdfs-comment"> <b>pg_version()</b> returns an array with the client, protocol and server version. Protocol and server versions are only available if PHP was compiled with PostgreSQL 7.4 or later. </p> <p class="para"> For more detailed server information, use <a href="function.pg-parameter-status.html" class="function">pg_parameter_status()</a>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">connection</tt></i></span> <dd> <p class="para"> PostgreSQL database connection resource. When <i><tt class="parameter">connection</tt></i> is not present, the default connection is used. The default connection is the last connection made by <a href="function.pg-connect.html" class="function">pg_connect()</a> or <a href="function.pg-pconnect.html" class="function">pg_pconnect()</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns an array with <i>client</i>, <i>protocol</i> and <i>server_version</i> keys and values (if available). Returns <b><tt>FALSE</tt></b> on error or invalid connection. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>pg_version()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /> $dbconn </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"host=localhost port=5432 dbname=mary"</span><span style="color: #007700">)<br /> or die(</span><span style="color: #DD0000">"Could not connect"</span><span style="color: #007700">);<br /> <br /> </span><span style="color: #0000BB">$v </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_version</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbconn</span><span style="color: #007700">);<br /> <br /> echo </span><span style="color: #0000BB">$v</span><span style="color: #007700">[</span><span style="color: #DD0000">'client'</span><span style="color: #007700">];<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output:</p></div> <div class="example-contents"><pre><div class="cdata"><pre>7.4</pre></div> </pre></div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.pg-parameter-status.html" class="function" rel="rdfs-seeAlso">pg_parameter_status()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="ref.pgsql.html">PostgreSQL Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="book.sqlite.html">SQLite</a></div> <div class="up"><a href="ref.pgsql.html">PostgreSQL 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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