# mysql_num_fields

(PHP 4, PHP 5, PECL mysql:1.0)

mysql_num_fields — Get number of fields in result

### Description

int mysql_num_fields ( resource `$result` )

Retrieves the number of fields from a query.

### Parameters

`result`

  The result resource that is being evaluated. This result comes from a call to mysql_query().

### Return Values

Returns the number of fields in the result set resource on success, or `FALSE` on failure.

### Examples

Example#1 A mysql_num_fields() example

`<?php
$result = mysql_query("SELECT id,email FROM people WHERE id = '42'");
if (!$result) {
echo 'Could not run query: ' . mysql_error();
exit;
}
/* returns 2 because id,email === two fields */
echo mysql_num_fields($result);
?>`

### Notes

> Note: For downward compatibility, the following deprecated alias may be used: mysql_numfields()

### See Also

- mysql_select_db()
- mysql_query()
- mysql_fetch_field()
- mysql_num_rows()