pg_num_fields

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

pg_num_fieldsReturns the number of fields in a result

Descrierea

pg_num_fields ( resource $result ) : int

pg_num_fields() returns the number of fields (columns) in a PostgreSQL result resource.

Notă:

This function used to be called pg_numfields().

Parametri

result

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

Valorile întoarse

The number of fields (columns) in the result. On error, -1 is returned.

Exemple

Example #1 pg_num_fields() example

<?php
$result 
pg_query($conn"SELECT 1, 2");

$num pg_num_fields($result);

echo 
$num " field(s) returned.\n";
?>

Exemplul de mai sus va afișa:

2 field(s) returned.

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