(PHP 4, PHP 5)
mysql_field_name — Get the name of the specified field in a result
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. Alternatives to this function include:
mysql_field_name() returns the name of the specified field index.
resultThe result resource that is being evaluated. This result comes from a call to mysql_query().
field_offsetThe numerical field offset. The
field_offset starts at 0. If
field_offset does not exist, an error of level
E_WARNING is also issued.
The name of the specified field index on success or false on failure.
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
Note: Field names returned by this function are case-sensitive.
Note:
For backward compatibility, the following deprecated alias may be used: mysql_fieldname()