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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>Number of rows in a result</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.odbc-num-fields.html">odbc_num_fields</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.odbc-pconnect.html">odbc_pconnect</a></div> <div class="up"><a href="ref.uodbc.html">ODBC Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.odbc-num-rows" class="refentry"> <div class="refnamediv"> <h1 class="refname">odbc_num_rows</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">odbc_num_rows</span> — <span class="dc-title">Number of rows in a result</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>odbc_num_rows</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$result_id</tt></span> )</div> <p class="para rdfs-comment"> Gets the number of rows in a result. For INSERT, UPDATE and DELETE statements <b>odbc_num_rows()</b> returns the number of rows affected. For a SELECT clause this <i>can</i> be the number of rows available. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">result_id</tt></i></span> <dd> <p class="para"> The result identifier returned by <a href="function.odbc-exec.html" class="function">odbc_exec()</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the number of rows in an ODBC result. This function will return -1 on error. </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <blockquote><p><b class="note">Note</b>: Using <b>odbc_num_rows()</b> to determine the number of rows available after a SELECT will return -1 with many drivers. <br /> </p></blockquote> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.odbc-num-fields.html">odbc_num_fields</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.odbc-pconnect.html">odbc_pconnect</a></div> <div class="up"><a href="ref.uodbc.html">ODBC 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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