pg_field_num

(PHP 4 >= 4.2.0, PHP 5)

pg_field_num -- Returns the field number of the named field

Описание

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.

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

Список параметров

result

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

field_name

The name of the field.

Возвращаемые значения

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

Примеры

Пример 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');
?>

Результат выполнения данного примера:

Column 'title' is field number: 2

Смотрите также

pg_field_name()



pg_field_num
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 Last updated: Tue, 15 Nov 2005