(PHP 4 >= 4.2.0, PHP 5)
pg_num_fields() returns the number of fields (columns) in a PostgreSQL result resource.
Nota: This function used to be called pg_numfields().
PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
The number of fields (columns) in the result. On error, -1 is returned.
Ejemplo 1. pg_num_fields() example
<?php$result = pg_query($conn, "SELECT 1, 2");$num = pg_num_fields($result);echo $num . " field(s) returned.\n";?>
El resultado del ejemplo seria:
2 field(s) returned.
