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69 lines
2.4 KiB
HTML
69 lines
2.4 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>Number of rows in a result</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.odbc-num-rows" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">odbc_num_rows</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">odbc_num_rows</span> — <span class="dc-title">Number of rows in a result</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.odbc-num-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>odbc_num_rows</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result_id</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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Gets the number of rows in a result. For INSERT, UPDATE and DELETE
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statements <span class="function"><strong>odbc_num_rows()</strong></span> returns the number of rows
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affected. For a SELECT clause this <em>can</em> be the number
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of rows available.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.odbc-num-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">result_id</code></dt>
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<dd>
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<p class="para">
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The result identifier returned by <span class="function"><a href="odbc_exec.html" class="function">odbc_exec()</a></span>.
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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.odbc-num-rows-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 number of rows in an ODBC result.
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This function will return -1 on error.
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.odbc-num-rows-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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Using <span class="function"><strong>odbc_num_rows()</strong></span> to determine the number of rows
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available after a SELECT will return -1 with many drivers.
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</p>
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</p></blockquote>
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</div>
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</div></div></div></body></html> |