pg_field_name

pg_field_name是返回欄位的名字，返回給定 PostgreSQL result 資源中的 field_number 所代表的欄位名；

pg_field_name

(PHP 4 >= 4.2.0)

說明

string pg_field_name ( resource result, int field_number)

pg_field_name() 欄位編號從 0 開始。

例子 1. 獲取欄位信息; <?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"; }; ?> 上例的輸出如下： 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: 本函式以前的名字為 pg_fieldname()。