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pg_field_num

Manual de PHP
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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.

Nota: 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

Ejemplo 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

pg_field_name()

Anterior	Inicio	Siguiente
pg_field_name	Subir	pg_field_prtlen

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