<!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>Get the last error message string of a connection</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.pg-insert.html">pg_insert</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.pg-last-notice.html">pg_last_notice</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-last-error" class="refentry"> <div class="refnamediv"> <h1 class="refname">pg_last_error</h1> <p class="verinfo">(PHP 4 >= 4.2.0, PHP 5)</p><p class="refpurpose"><span class="refname">pg_last_error</span> — <span class="dc-title">Get the last error message string of a connection</span></p> </div> <div class="refsect1 description" id="refsect1-function.pg-last-error-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><strong>pg_last_error</strong></span> ([ <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection</code></span> ] )</div> <p class="para rdfs-comment"> <span class="function"><strong>pg_last_error()</strong></span> returns the last error message for a given <em><code class="parameter">connection</code></em>. </p> <p class="para"> Error messages may be overwritten by internal PostgreSQL (libpq) function calls. It may not return an appropriate error message if multiple errors occur inside a PostgreSQL module function. </p> <p class="para"> Use <span class="function"><a href="function.pg-result-error.html" class="function">pg_result_error()</a></span>, <span class="function"><a href="function.pg-result-error-field.html" class="function">pg_result_error_field()</a></span>, <span class="function"><a href="function.pg-result-status.html" class="function">pg_result_status()</a></span> and <span class="function"><a href="function.pg-connection-status.html" class="function">pg_connection_status()</a></span> for better error handling. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> This function used to be called <span class="function"><strong>pg_errormessage()</strong></span>. </p> </p></blockquote> </div> <div class="refsect1 parameters" id="refsect1-function.pg-last-error-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">connection</code></em></span> <dd> <p class="para"> PostgreSQL database connection resource. When <em><code class="parameter">connection</code></em> is not present, the default connection is used. The default connection is the last connection made by <span class="function"><a href="function.pg-connect.html" class="function">pg_connect()</a></span> or <span class="function"><a href="function.pg-pconnect.html" class="function">pg_pconnect()</a></span>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.pg-last-error-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> A <span class="type"><a href="language.types.string.html" class="type string">string</a></span> containing the last error message on the given <em><code class="parameter">connection</code></em>, or <strong><code>FALSE</code></strong> on error. </p> </div> <div class="refsect1 examples" id="refsect1-function.pg-last-error-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-2085"> <p><strong>Example #1 <span class="function"><strong>pg_last_error()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /> $dbconn </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"dbname=publisher"</span><span style="color: #007700">) or die(</span><span style="color: #DD0000">"Could not connect"</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">// Query that fails<br /> </span><span style="color: #0000BB">$res </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbconn</span><span style="color: #007700">, </span><span style="color: #DD0000">"select * from doesnotexist"</span><span style="color: #007700">);<br /> <br /> echo </span><span style="color: #0000BB">pg_last_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbconn</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </p> </div> <div class="refsect1 seealso" id="refsect1-function.pg-last-error-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.pg-result-error.html" class="function" rel="rdfs-seeAlso">pg_result_error()</a> - Get error message associated with result</span></li> <li class="member"> <span class="function"><a href="function.pg-result-error-field.html" class="function" rel="rdfs-seeAlso">pg_result_error_field()</a> - Returns an individual field of an error report.</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.pg-insert.html">pg_insert</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.pg-last-notice.html">pg_last_notice</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>