PostgreSQL
PHP Manual

pg_field_num

(PHP 4 >= 4.2.0, PHP 5)

pg_field_num — Returns the field number of the named field

Descripción

int pg_field_num ( resource $result , string $field_name )

pg_field_num() will return the number of the field number that corresponds to the field_name in the given PostgreSQL result resource.

Note: This function used to be called pg_fieldnum().

Lista de parámetros

result

PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).

field_name

The name of the field.

Valores retornados

The field number (numbered from 0), or -1 on error.

Ejemplos

Example#1 Getting information about fields

<?php
  $dbconn 
pg_connect("dbname=publisher") or die("Could not connect");

  
$res pg_query($dbconn"select author, year, title from authors where author = 'Orwell'");
  
  echo 
"Column 'title' is field number: "pg_field_num($res'title');
?>

El resultado del ejemplo seria:

Column 'title' is field number: 2

Ver también


PostgreSQL
PHP Manual