mirror of
https://github.com/sigmasternchen/php-doc-en
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d208b4c328
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@135201 c90b9560-bf6c-de11-be94-00142212c4b1
72 lines
2.2 KiB
XML
72 lines
2.2 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.4 $ -->
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<!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.2 -->
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<refentry id="function.pg-field-is-null">
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<refnamediv>
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<refname>pg_field_is_null</refname>
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<refpurpose>Test if a field is &null;</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>int</type><methodname>pg_field_is_null</methodname>
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<methodparam><type>resource</type><parameter>result</parameter></methodparam>
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<methodparam><type>int</type><parameter>row</parameter></methodparam>
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<methodparam><type>mixed</type><parameter>field</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>pg_field_is_null</function> tests if a field is &null; or
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not. It returns 1 if the field in the given row is &null;. It
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returns 0 if the field in the given row is NOT &null;. Field can
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be specified as column index (number) or fieldname (string). Row
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numbering starts at 0.
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</para>
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<para>
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<example>
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<title><function>pg_field_is_null</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$dbconn = pg_connect("dbname=publisher") or die ("Could not connect");
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$res = pg_query($dbconn, "select * from authors where author = 'Orwell'");
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if ($res) {
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if (pg_field_is_null($res, 0, "year") == 1) {
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echo "The value of the field year is null.\n";
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}
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if (pg_field_is_null($res, 0, "year") == 0) {
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echo "The value of the field year is not null.\n";
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}
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}
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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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<note>
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<para>
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This function used to be called <literal>pg_fieldisnull()</literal>.
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</para>
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</note>
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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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