pg_field_name

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\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"; } ?> 上例的输出如下： 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

参见 pg_field_num()。