(PHP 4 >= 4.2.0, PHP 5, PHP 7)
pg_field_name — �����ֶε�����
$result
, int $field_number
) : string
pg_field_name() ���ظ��� PostgreSQL result ��Դ�е� field_number ��������ֶ������ֶα�Ŵ� 0 ��ʼ��
Example #1 ��ȡ�ֶ���Ϣ
<?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 $j\n";
$fieldname = pg_field_name($res, $j);
echo "fieldname: $fieldname\n";
echo "printed length: ".pg_field_prtlen($res, $fieldname)." characters\n";
echo "storage length: ".pg_field_size($res, $j)." bytes\n";
echo "field type: ".pg_field_type($res, $j)." \n\n";
}
?>
������������£�
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
Note:
��������ǰ������Ϊ pg_fieldname()��
�μ� pg_field_num()��