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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

Açıklama

pg_field_num(PgSql\Result $result, string $field): int

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

Bilginize:

This function used to be called pg_fieldnum().

Bağımsız Değişkenler

result

pg_query(), pg_query_params() veya pg_execute() işlevinden dönen PgSql\Result nesnesi.

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.

Dönen Değerler

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

Sürüm Bilgisi

Sürüm: Açıklama
8.1.0 sonuç bağımsız değişkeni artık PgSql\Result nesnesi kabul ediyor, evvelce bir özkaynak kabul ederdi.

Örnekler

Örnek 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');
?>

Yukarıdaki örneğin çıktısı:

Column 'title' is field number: 2

Ayrıca Bakınız