PHP Manual
MySQL Functions
Get the name of the specified field in a result

mysql_field_name

(PHP 4, PHP 5)

mysql_field_name — Get the name of the specified field in a 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:

mysqli_fetch_field_direct() [name] or [orgname]
PDOStatement::getColumnMeta() [name]

Description

mysql_field_name ( resource $result , int $field_offset ) : string|false

mysql_field_name() returns the name of the specified field index.

Parameters

result: The result resource that is being evaluated. This result comes from a call to mysql_query().
field_offset: The numerical field offset. The field_offset starts at 0. If field_offset does not exist, an error of level E_WARNING is also issued.

Return Values

The name of the specified field index on success or FALSE on failure.

Examples

Example #1 mysql_field_name() example

<?php/* The users table consists of three fields: * user_id * username * password. */$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');if (!$link) { die('Could not connect to MySQL server: ' . mysql_error());}$dbname = 'mydb';$db_selected = mysql_select_db($dbname, $link);if (!$db_selected) { die("Could not set $dbname: " . mysql_error());}$res = mysql_query('select * from users', $link);echo mysql_field_name($res, 0) . "\n";echo mysql_field_name($res, 2);?>

The above example will output:

user_id
password

Notes

Note:
Field names returned by this function
are case-sensitive.

Note:
For backward compatibility, the following deprecated alias may be used: mysql_fieldname()

Php/docs/function.mysql-field-name

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