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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.mysql-field-flags" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>mysql_field_flags</refname>
<refpurpose>Get the flags associated with the specified field in a result</refpurpose>
</refnamediv>
<refsynopsisdiv>
<warning>
&mysql.alternative.note;
<simplelist role="alternatives">
<member><function>mysqli_fetch_field_direct</function> [flags]</member>
<member><methodname>PDOStatement::getColumnMeta</methodname> [flags]</member>
</simplelist>
</warning>
</refsynopsisdiv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type class="union"><type>string</type><type>false</type></type><methodname>mysql_field_flags</methodname>
<methodparam><type>resource</type><parameter>result</parameter></methodparam>
<methodparam><type>int</type><parameter>field_offset</parameter></methodparam>
</methodsynopsis>
<para>
<function>mysql_field_flags</function> returns the field flags of
the specified field. The flags are reported as a single word
per flag separated by a single space, so that you can split the
returned value using <function>explode</function>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
&mysql.result.description;
&mysql.field-offset.req.description;
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns a string of flags associated with the result&return.falseforfailure;.
</para>
<para>
The following flags are reported, if your version of MySQL
is current enough to support them: <literal>"not_null"</literal>,
<literal>"primary_key"</literal>, <literal>"unique_key"</literal>,
<literal>"multiple_key"</literal>, <literal>"blob"</literal>,
<literal>"unsigned"</literal>, <literal>"zerofill"</literal>,
<literal>"binary"</literal>, <literal>"enum"</literal>,
<literal>"auto_increment"</literal> and <literal>"timestamp"</literal>.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>A <function>mysql_field_flags</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$result = mysql_query("SELECT id,email FROM people WHERE id = '42'");
if (!$result) {
echo 'Could not run query: ' . mysql_error();
exit;
}
$flags = mysql_field_flags($result, 0);
echo $flags;
print_r(explode(' ', $flags));
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
not_null primary_key auto_increment
Array
(
[0] => not_null
[1] => primary_key
[2] => auto_increment
)
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<para>
&info.deprecated.alias;
<function>mysql_fieldflags</function>
</para>
</note>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>mysql_field_type</function></member>
<member><function>mysql_field_len</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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