(PHP 4, PHP 5)
mysql_list_fields — List MySQL table fields
This function was deprecated in PHP 5.4.0, and will be removed in the future, along with the entirety of the original MySQL extension. 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:
$database_name
, string $table_name
[, resource $link_identifier
= NULL
] )Retrieves information about the given table name.
This function is deprecated. It is preferable to use mysql_query() to issue an SQL SHOW COLUMNS FROM table [LIKE 'name'] statement instead.
database_name
The name of the database that's being queried.
table_name
The name of the table that's being queried.
link_identifier
The MySQL connection. If the
link identifier is not specified, the last link opened by
mysql_connect() is assumed. If no such link is found, it
will try to create one as if mysql_connect() was called
with no arguments. If no connection is found or established, an
E_WARNING
level error is generated.
A result pointer resource on success, or FALSE
on
failure.
The returned result can be used with mysql_field_flags(), mysql_field_len(), mysql_field_name() and mysql_field_type().
Example #1 Alternate to deprecated mysql_list_fields()
<?php
$result = mysql_query("SHOW COLUMNS FROM sometable");
if (!$result) {
echo 'Could not run query: ' . mysql_error();
exit;
}
if (mysql_num_rows($result) > 0) {
while ($row = mysql_fetch_assoc($result)) {
print_r($row);
}
}
?>
The above example will output something similar to:
Array ( [Field] => id [Type] => int(7) [Null] => [Key] => PRI [Default] => [Extra] => auto_increment ) Array ( [Field] => email [Type] => varchar(100) [Null] => [Key] => [Default] => [Extra] => )
Note:
For backward compatibility, the following deprecated alias may be used: mysql_listfields()