Php/docs/function.pg-num-fields
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pg_num_fields
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
pg_num_fields — Returns the number of fields in a result
Description
pg_num_fields
( resource $result
) : int
pg_num_fields() returns the number of fields (columns) in a PostgreSQL result resource.
Note:
This function used to be called pg_numfields().
Parameters
result- PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
Return Values
The number of fields (columns) in the result. On error, -1 is returned.
Examples
Example #1 pg_num_fields() example
<?php$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
- pg_num_rows() - Returns the number of rows in a result
- pg_affected_rows() - Returns number of affected records (tuples)
