mysqli_stmt_result_metadata

(PHP 5)

Description

Procedural style:

Object oriented style (method):

If a statement passed to mysqli_prepare() is one that produces a result set, mysqli_stmt_result_metadata() returns the result object that can be used to process the meta information such as total number of fields and individual field information.

The result set structure should be freed when you are done with it, which you can do by passing it to mysqli_free_result()

Возвращаемые значения

mysqli_stmt_result_metadata() returns a result object or FALSE if an error occured.

Смотрите также

mysqli_prepare() и mysqli_free_result().

Примеры

Пример 1. Object oriented style <?php $mysqli = new mysqli("localhost", "my_user", "my_password", "test"); $mysqli->query("DROP TABLE IF EXISTS friends"); $mysqli->query("CREATE TABLE friends (id int, name varchar(20))"); $mysqli->query("INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')"); $stmt = $mysqli->prepare("SELECT id, name FROM friends"); $stmt->execute(); /* get resultset for metadata */ $result = $stmt->result_metadata(); /* retrieve field information from metadata result set */ $field = $result->fetch_field(); printf("Fieldname: %s\n", $field->name); /* close resultset */ $result->close(); /* close connection */ $mysqli->close(); ?>

Пример 2. Procedural style <?php $link = mysqli_connect("localhost", "my_user", "my_password", "test"); mysqli_query($link, "DROP TABLE IF EXISTS friends"); mysqli_query($link, "CREATE TABLE friends (id int, name varchar(20))"); mysqli_query($link, "INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')"); $stmt = mysqli_prepare($link, "SELECT id, name FROM friends"); mysqli_stmt_execute($stmt); /* get resultset for metadata */ $result = mysqli_stmt_result_metadata($stmt); /* retrieve field information from metadata result set */ $field = mysqli_fetch_field($result); printf("Fieldname: %s\n", $field->name); /* close resultset */ mysqli_free_result($result); /* close connection */ mysqli_close($link); ?>