PHP: Hypertext Preprocessor (original) (raw)

pg_field_num

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

pg_field_num — Returns the field number of the named field

Description

Note:

This function used to be called pg_fieldnum().

Parameters

result

An PgSql\Result instance, returned by pg_query(),pg_query_params() or pg_execute()(among others).

field

The name of the field. The given name is treated like an identifier in an SQL command, that is, it is downcased unless double-quoted.

Return Values

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

Changelog

Version Description
8.1.0 The result parameter expects an PgSql\Result instance now; previously, a resource was expected.

Examples

Example #1 Getting information about fields

`<?php
dbconn=pgconnect("dbname=publisher")ordie("Couldnotconnect");dbconn = pg_connect("dbname=publisher") or die("Could not connect");dbconn=pgc​onnect("dbname=publisher")ordie("Couldnotconnect");res = pg_query($dbconn, "select author, year, title from authors where author = 'Orwell'");

echo

"Column 'title' is field number: ", pg_field_num($res, 'title');
?>`

The above example will output:

Column 'title' is field number: 2

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