pg_num_fields

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

Returns the number of fields in a result

int pg_num_fields ( resource $result )

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

Note:

This function used to be called pg_numfields().

Parameters:

result

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

Returns:

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

Examples:

pg_num_fields() example

<?php
$result = pg_query($conn, "SELECT 1, 2");
 
$num = pg_num_fields($result);
 
echo $num . " field(s) returned.\n";
?>

The above example will output:

2 field(s) returned.