oci-field-name.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 5e41012cfdf8f2eff5fa56de446c7656afac536c Maintainer: yincheng Status: ready -->
<!-- CREDITS: dallas, mowangjuanzi -->
<refentry xml:id="function.oci-field-name" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>oci_field_name</refname>
  <refpurpose>返回 statement 中的字段名</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type class="union"><type>string</type><type>false</type></type><methodname>oci_field_name</methodname>
   <methodparam><type>resource</type><parameter>statement</parameter></methodparam>
   <methodparam><type class="union"><type>string</type><type>int</type></type><parameter>column</parameter></methodparam>
  </methodsynopsis>
  <para>
   返回 <parameter>column</parameter> 的名称。
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>statement</parameter></term>
     <listitem>
      <para>
       有效的 OCI 语句标识符。
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>column</parameter></term>
     <listitem>
      <para>
       字段索引（从 1 开始）或者名称。
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   返回字符串形式的名称，&return.falseforfailure;
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>oci_field_name</function> 示例</title>
    <programlisting role="php">
<![CDATA[
<?php

// 创建表：
//   CREATE TABLE mytab (number_col NUMBER, varchar2_col varchar2(1),
//                       clob_col CLOB, date_col DATE);

$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!$conn) {
    $m = oci_error();
    trigger_error(htmlentities($m['message']), E_USER_ERROR);
}

$stid = oci_parse($conn, "SELECT * FROM mytab");
oci_execute($stid, OCI_DESCRIBE_ONLY); // Use OCI_DESCRIBE_ONLY if not fetching rows

echo "<table border=\"1\">\n";
echo "<tr>";
echo "<th>Name</th>";
echo "<th>Type</th>";
echo "<th>Length</th>";
echo "</tr>\n";

$ncols = oci_num_fields($stid);

for ($i = 1; $i <= $ncols; $i++) {
    $column_name  = oci_field_name($stid, $i);
    $column_type  = oci_field_type($stid, $i);

    echo "<tr>";
    echo "<td>$column_name</td>";
    echo "<td>$column_type</td>";
    echo "</tr>\n";
}

echo "</table>\n";

// 输出：
//    Name           Type
//    NUMBER_COL    NUMBER
//    VARCHAR2_COL  VARCHAR2
//    CLOB_COL      CLOB
//    DATE_COL      DATE

oci_free_statement($stid);
oci_close($conn);

?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>oci_num_fields</function></member>
    <member><function>oci_field_type</function></member>
    <member><function>oci_field_size</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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