mysql_list_fields
(PHP 4, PHP 5)
mysql_list_fields — List MySQL table fields
Description
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.
Parameters
- 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.
Return Values
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().
Examples
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] =>
)
Notes
Note:
For backward compatibility, the following deprecated alias may be used: mysql_listfields()
See Also
- mysql_field_flags() - Get the flags associated with the specified field in a result
- mysql_info() - Get information about the most recent query