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PHP pg_num_fields

PHP original manual for pg_num_fields [ show | php.net ]

pg_num_fields

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

pg_num_fields — Returns the number of fields in a result

Description

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).

Return Values

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

Examples

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";
?>

The above example will output:

2 field(s) returned.

See Also