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103 lines
5.1 KiB
HTML
103 lines
5.1 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>Get a meaningful error message for the last error generated</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.ingres-error" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">ingres_error</h1>
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<p class="verinfo">(PECL ingres >= 1.1.0)</p><p class="refpurpose"><span class="refname">ingres_error</span> — <span class="dc-title">Get a meaningful error message for the last error generated</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.ingres-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>ingres_error</strong></span>
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([ <span class="methodparam"><span class="type">resource</span> <code class="parameter">$link</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 a string containing the last error, or NULL if no error has
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occurred.
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</p>
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<p class="para">
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If a <code class="parameter">link</code> resource is passed to
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<span class="function"><strong>ingres_error()</strong></span>, it returns the last error recorded for
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the link. If no link is passed then <span class="function"><strong>ingres_error()</strong></span>
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returns the last error reported using the default link.
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</p>
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<p class="para">
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The function, <span class="function"><strong>ingres_error()</strong></span>, should always be called
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after executing any database query. Calling another function before
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<span class="function"><strong>ingres_error()</strong></span> is called will reset or change any
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error message from the last Ingres function call.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.ingres-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">link</code></dt>
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<dd>
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<p class="para">
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The connection link identifier
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</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.ingres-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 a string containing the last error, or NULL if no error has
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occurred.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.ingres-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-1301">
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<p><strong>Example #1 Get a message for the last error generated</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 />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">ingres_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">ingres_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"select * from table"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$error_text </span><span style="color: #007700">= </span><span style="color: #0000BB">ingres_error</span><span style="color: #007700">();<br /><br />if (!</span><span style="color: #0000BB">is_null</span><span style="color: #007700">(</span><span style="color: #0000BB">$error_text</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"An error occurred - " </span><span style="color: #007700">. </span><span style="color: #0000BB">$error_text</span><span style="color: #007700">;<br />}<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.ingres-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="ingres_errno.html" class="function" rel="rdfs-seeAlso">ingres_errno()</a> - Get the last Ingres error number generated</span></li>
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<li class="member"><span class="function"><a href="ingres_errsqlstate.html" class="function" rel="rdfs-seeAlso">ingres_errsqlstate()</a> - Get the last SQLSTATE error code generated</span></li>
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<li class="member"><span class="function"><a href="ingres_next_error.html" class="function" rel="rdfs-seeAlso">ingres_next_error()</a> - Get the next Ingres error</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> |