mirror of
https://github.com/sigmasternchen/php-doc-en
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8c1fe07114
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@333039 c90b9560-bf6c-de11-be94-00142212c4b1
130 lines
3.1 KiB
XML
130 lines
3.1 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.oci-field-is-null" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>oci_field_is_null</refname>
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<refpurpose>Checks if a field in the currently fetched row is &null;</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>oci_field_is_null</methodname>
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<methodparam><type>resource</type><parameter>statement</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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Checks if the given <parameter>field</parameter> from the current row of
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<parameter>statement</parameter> is &null;.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>statement</parameter></term>
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<listitem>
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<para>
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A valid OCI statement identifier.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>field</parameter></term>
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<listitem>
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<para>
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Can be the field's index (1-based) or name.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns &true; if <parameter>field</parameter> is &null;, &false; otherwise.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title><function>oci_field_name</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// Create the table with:
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// CREATE TABLE mytab (c1 NUMBER);
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// INSERT INTO mytab VALUES (1);
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// INSERT INTO mytab VALUES (NULL);
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$conn = oci_connect("hr", "hrpwd", "localhost/XE");
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if (!$conn) {
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$m = oci_error();
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trigger_error(htmlentities($m['message']), E_USER_ERROR);
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}
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$stid = oci_parse($conn, "SELECT * FROM mytab");
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oci_execute($stid);
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while (($row = oci_fetch_array($stid, OCI_RETURN_NULLS)) != false) {
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$ncols = oci_num_fields($stid);
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for ($col = 1; $col <= $ncols; $col++) {
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var_dump(oci_field_is_null($stid, $col));
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}
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}
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// Outputs:
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// bool(false)
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// bool(true)
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oci_free_statement($stid);
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oci_close($conn);
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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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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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<note>
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<para>
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In PHP versions before 5.0.0 you must use <function>ocicolumnisnull</function> instead.
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This name still can be used, it was left as alias of
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<function>oci_field_is_null</function> for downwards compatability.
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This, however, is deprecated and not recommended.
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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:"~/.phpdoc/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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