pg_field_name 返回字段的名字


pg_field_name

(PHP 4 >= 4.2.0, PHP 5)

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。

Example #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 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:

本函数以前的名字为 pg_fieldname()

参见 pg_field_num()


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