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94 lines
5.7 KiB
HTML
94 lines
5.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Returns the error message from previous operation</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.fbsql-error" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">fbsql_error</h1>
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<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">fbsql_error</span> — <span class="dc-title">Returns the error message from previous operation</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.fbsql-error-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>fbsql_error</strong></span>
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([ <span class="methodparam"><span class="type">resource</span> <code class="parameter">$link_identifier</code></span>
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] ) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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Returns the error message from previous FrontBase operation.
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</p>
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<p class="para">
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Errors coming back from the fbsql database backend don't issue warnings.
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Instead, use <span class="function"><strong>fbsql_error()</strong></span> to retrieve the error text.
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Note that this function only returns the error code from the most recently
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executed fbsql function (not including <span class="function"><strong>fbsql_error()</strong></span>
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and <span class="function"><a href="fbsql_errno.html" class="function">fbsql_errno()</a></span>), so if you want to use it, make sure
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you check the value before calling another fbsql function.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.fbsql-error-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">
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link_identifier</code></dt>
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<dd>
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<p class="para">由
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<span class="function"><a href="fbsql_connect.html" class="function">fbsql_connect()</a></span> 或
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<span class="function"><a href="fbsql_pconnect.html" class="function">fbsql_pconnect()</a></span> 返回的 FrontBase 链接标识符.</p>
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<p class="para">如可选并未指定，函数会尝试查找一个到 FrontBase 服务器的开放链接，且如没有找到这样的链接，会尝试通过不带参数调用 <span class="function"><a href="fbsql_connect.html" class="function">fbsql_connect()</a></span> 来创建一个。</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.fbsql-error-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns the error text from the last fbsql function, or
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<em>''</em> (the empty string) if no error occurred.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.fbsql-error-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-1212">
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<p><strong>Example #1 <span class="function"><strong>fbsql_error()</strong></span> Example</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<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>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.fbsql-error-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="fbsql_errno.html" class="function" rel="rdfs-seeAlso">fbsql_errno()</a> - Returns the error number from previous operation</span></li>
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<li class="member"><span class="function"><a href="fbsql_warnings.html" class="function" rel="rdfs-seeAlso">fbsql_warnings()</a> - Enable or disable FrontBase warnings</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |