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89 lines
3.7 KiB
HTML
89 lines
3.7 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>Get number of affected rows in previous FrontBase 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-affected-rows" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">fbsql_affected_rows</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_affected_rows</span> — <span class="dc-title">Get number of affected rows in previous FrontBase operation</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.fbsql-affected-rows-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_affected_rows</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">int</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>fbsql_affected_rows()</strong></span> returns the number
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of rows affected by the last INSERT, UPDATE or DELETE query
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associated with <code class="parameter">link_identifier</code>.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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If you are using transactions, you need to call
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<span class="function"><strong>fbsql_affected_rows()</strong></span> after your INSERT,
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UPDATE, or DELETE query, not after the commit.
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</p>
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</p></blockquote>
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<p class="para">
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If the last query was a DELETE query with no WHERE clause, all of
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the records will have been deleted from the table but this
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function will return zero.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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When using UPDATE, FrontBase will not update columns where the
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new value is the same as the old value. This creates the
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possibility that <span class="function"><strong>fbsql_affected_rows()</strong></span> may not
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actually equal the number of rows matched, only the number of
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rows that were literally affected by the query.
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.fbsql-affected-rows-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-affected-rows-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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If the last query failed, this function will return -1.
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.fbsql-affected-rows-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_num_rows.html" class="function" rel="rdfs-seeAlso">fbsql_num_rows()</a> - Get number of rows in result</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> |