function.fbsql-errno.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 the error number from previous operation</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.fbsql-drop-db.html">fbsql_drop_db</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.fbsql-error.html">fbsql_error</a></div> <div class="up"><a href="ref.fbsql.html">FrontBase Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.fbsql-errno" class="refentry"> <div class="refnamediv"> <h1 class="refname">fbsql_errno</h1> <p class="verinfo">(PHP 4 >= 4.0.6, PHP 5)</p><p class="refpurpose"><span class="refname">fbsql_errno</span> — <span class="dc-title">Returns the error number from previous operation</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>fbsql_errno</b></b></span> ([ <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$link_identifier</tt></span> ] )</div> <p class="para rdfs-comment"> Returns the numerical value of the error message from previous FrontBase operation. </p> <p class="para"> Errors coming back from the fbsql database backend don't issue warnings. Instead, use <b>fbsql_errno()</b> to retrieve the error code. Note that this function only returns the error code from the most recently executed fbsql function (not including <a href="function.fbsql-error.html" class="function">fbsql_error()</a> and <b>fbsql_errno()</b>), so if you want to use it, make sure you check the value before calling another fbsql function. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt><span class="term"><i><tt class="parameter">link_identifier</tt></i></span><dd><p class="para">A FrontBase link identifierreturned by <a href="function.fbsql-connect.html" class="function">fbsql_connect()</a> or <a href="function.fbsql-pconnect.html" class="function">fbsql_pconnect()</a>.</p><p class="para">If optional and not specified,the function will try to find an open link to the FrontBase server and if nosuch link is found it will try to create one as if <a href="function.fbsql-connect.html" class="function">fbsql_connect()</a> was called with no arguments</p></dd></dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the error number from the last fbsql function, or <i>0</i> (zero) if no error occurred. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>fbsql_errno()</b> Example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />fbsql_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"marliesle"</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">fbsql_errno</span><span style="color: #007700">() . </span><span style="color: #DD0000">": " </span><span style="color: #007700">. </span><span style="color: #0000BB">fbsql_error</span><span style="color: #007700">() . </span><span style="color: #DD0000">"<br />"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">fbsql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">"nonexistentdb"</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">fbsql_errno</span><span style="color: #007700">() . </span><span style="color: #DD0000">": " </span><span style="color: #007700">. </span><span style="color: #0000BB">fbsql_error</span><span style="color: #007700">() . </span><span style="color: #DD0000">"<br />"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">fbsql_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT * FROM nonexistenttable;"</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">fbsql_errno</span><span style="color: #007700">() . </span><span style="color: #DD0000">": " </span><span style="color: #007700">. </span><span style="color: #0000BB">fbsql_error</span><span style="color: #007700">() . </span><span style="color: #DD0000">"<br />"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span></span></code></div> </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.fbsql-error.html" class="function" rel="rdfs-seeAlso">fbsql_error()</a></li> <li class="member"><a href="function.fbsql-warnings.html" class="function" rel="rdfs-seeAlso">fbsql_warnings()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.fbsql-drop-db.html">fbsql_drop_db</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.fbsql-error.html">fbsql_error</a></div> <div class="up"><a href="ref.fbsql.html">FrontBase 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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