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(PHP 3, PHP 4, PHP 5)

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

Related Function(s)

mysql_query()

mysql_select_db()

mysql_fetch_field()

mysql_num_rows()