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PHP mysql_num_fields

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

mysql_num_fields

(PHP 4, PHP 5)

mysql_num_fields — Get number of fields in result

Warning

This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:

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 backward compatibility, the following deprecated alias may be used: mysql_numfields()

See Also