mirror of
https://github.com/sigmasternchen/php-doc-en
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0768abafe7
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@152467 c90b9560-bf6c-de11-be94-00142212c4b1
146 lines
3.7 KiB
XML
146 lines
3.7 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.5 $ -->
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<refentry id="function.mysqli-num-rows">
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<refnamediv>
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<refname>mysqli_num_rows</refname>
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<refpurpose>
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Gets the number of rows in a result
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<para>Procedural style:</para>
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<methodsynopsis>
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<type>mixed</type><methodname>mysqli_num_rows</methodname>
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<methodparam><type>object</type><parameter>result</parameter></methodparam>
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</methodsynopsis>
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<para>Object oriented style (property):</para>
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<classsynopsis>
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<ooclass><classname>mysqli</classname></ooclass>
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<fieldsynopsis><type>mixed</type><varname>num_rows</varname></fieldsynopsis>
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</classsynopsis>
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<para>
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Returns the number of rows in the result set.
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</para>
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<para>
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The use of <function>mysqli_num_rows</function> depends on whether you use
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buffered or unbuffered result sets.
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In case you use unbuffered resultsets <function>mysqli_num_rows</function>
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will not correct the correct number of rows until all the rows in the result
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have been retrieved.
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</para>
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</refsect1>
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<refsect1>
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&reftitle.returnvalues;
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<para>
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Returns number of rows in the result set.
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</para>
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<note>
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<para>
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If the number of rows is greater than maximal int value, the number
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will be returned as a string.
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</para>
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</note>
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</refsect1>
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<refsect1>
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&reftitle.seealso;
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<para>
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<function>mysqli_affected_rows</function>
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<function>mysqli_store_result</function>
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<function>mysqli_use_result</function>
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<function>mysqli_query</function>
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</para>
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</refsect1>
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<refsect1>
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<title>Example</title>
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<example>
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<title>Object oriented style</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
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/* check connection */
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if (mysqli_connect_errno()) {
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printf("Connect failed: %s\n", mysqli_connect_error());
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exit();
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}
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if ($result = $mysqli->query("SELECT Code, Name FROM Country ORDER BY Name")) {
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/* determine number of rows result set */
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$row_cnt = $result->num_rows;
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printf("Result set has %d rows.\n", $row_cnt);
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/* close result set */
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$result->close();
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}
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/* close connection */
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$mysqli->close();
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?>
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]]>
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</programlisting>
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</example>
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<example>
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<title>Procedural style</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$link = mysqli_connect("localhost", "my_user", "my_password", "world");
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/* check connection */
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if (mysqli_connect_errno()) {
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printf("Connect failed: %s\n", mysqli_connect_error());
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exit();
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}
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if ($result = mysqli_query($link, "SELECT Code, Name FROM Country ORDER BY Name")) {
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/* determine number of rows result set */
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$row_cnt = mysqli_num_rows($result);
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printf("Result set has %d rows.\n", $row_cnt);
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/* close result set */
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mysqli_free_result($result);
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}
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/* close connection */
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mysqli_close($link);
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?>
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]]>
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</programlisting>
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</example>
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<para>
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The above examples would produce the following output:
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</para>
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<screen>
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<![CDATA[
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Result set has 239 rows.
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]]>
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</screen>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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