pg_field_name
(PHP 4 >= 4.2.0, PHP 5)
pg_field_name — 返回字段的名字
<h3>说明</h3>
string <strong>pg_field_name</strong>
( resource <code>$result</code>
, int <code>$field_number</code>
)
<p>
<strong>pg_field_name()</strong> 返回给定 PostgreSQL <code>result</code> 资源中的 <code>field_number</code> 所代表的字段名。字段编号从 0 开始。
</p>
<p>
<p><strong>Example #1 获取字段信息</strong></p><?php
$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
$res = pg_query($dbconn, "select * from authors where author = 'Orwell'");
$i = pg_num_fields($res);
for ($j = 0; $j < $i; $j++) {
echo "column $jn";
$fieldname = pg_field_name($res, $j);
echo "fieldname: $fieldnamen";
echo "printed length: ".pg_field_prtlen($res, $fieldname)." charactersn";
echo "storage length: ".pg_field_size($res, $j)." bytesn";
echo "field type: ".pg_field_type($res, $j)." nn";
}
?>
<p>
上例的输出如下：
</p>column 0 fieldname: author printed length: 6 characters storage length: -1 bytes field type: varchar column 1 fieldname: year printed length: 4 characters storage length: 2 bytes field type: int2 column 2 fieldname: title printed length: 24 characters storage length: -1 bytes field type: varchar
</p>
<p><strong>Note</strong>:
<p>
本函数以前的名字为 pg_fieldname()。
</p>
</p>
<p>
参见 pg_field_num()。
</p>