pg_field_name

说明

pg_field_name

(PHP 4 >= 4.2.0)

pg_field_name -- 返回字段的名字

说明

string pg_field_name ( resource result, int field_number)

pg_field_name() 返回给定 PostgreSQL result 资源中的 field_number 所代表的字段名。字段编号从 0 开始。

例子 1. 获取字段信息
<?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\";
$fieldname = pg_field_name($res, $j);
echo "fieldname: $fieldname\";
echo "printed length: ".pg_field_prtlen($res, $fieldname)." characters\";
echo "storage length: ".pg_field_size($res, $j)." bytes\";
echo "field type: ".pg_field_type($res, $j)." \\";
}
?> 上例的输出如下：
column 0fieldname: authorprinted length: 6 characters storage length: -1 bytesfield type: varcharcolumn 1fieldname: year printed length: 4 charactersstorage length: 2 bytesfield type: int2column 2 fieldname: titleprinted length: 24 charactersstorage length: -1 bytes field type: varchar注: 本函数以前的名字为 pg_fieldname()。