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mysqli_stmt::fetch
(PHP 5)
mysqli_stmt::fetch -- mysqli_stmt_fetch — Fetch results from a prepared statement into the bound variables
Beschreibung
Object oriented style (method):
bool mysqli_stmt::fetch
( void
)
Procedural style:
bool mysqli_stmt_fetch
( mysqli_stmt $stmt
)
Fetch the result from a prepared statement into the variables bound by mysqli_stmt_bind_result().
Hinweis: Note that all columns must be bound by the application before calling mysqli_stmt_fetch().
Hinweis: Data are transferred unbuffered without calling mysqli_stmt_store_result() which can decrease performance (but reduces memory cost).
Parameter-Liste
- stmt
-
Nur bei prozeduralem Aufruf: ein von mysqli_stmt_init() zurückgegebens Statementobjekt.
Rückgabewerte
| Value | Description |
|---|---|
| TRUE | Success. Data has been fetched |
| FALSE | Error occurred |
| NULL | No more rows/data exists or data truncation occurred |
Beispiele
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$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, CountryCode FROM City ORDER by ID DESC LIMIT 150,5";
if ($stmt = $mysqli->prepare($query)) {
/* execute statement */
$stmt->execute();
/* bind result variables */
$stmt->bind_result($name, $code);
/* fetch values */
while ($stmt->fetch()) {
printf("%s(%s)\n", $name, $code);
}
/* close statement */
$stmt->close();
}
/* close connection */
$mysqli->close();
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$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, CountryCode FROM City ORDER by ID DESC LIMIT 150,5";
if ($stmt = mysqli_prepare($link, $query)) {
/* execute statement */
mysqli_stmt_execute($stmt);
/* bind result variables */
mysqli_stmt_bind_result($stmt, $name, $code);
/* fetch values */
while (mysqli_stmt_fetch($stmt)) {
printf("%s(%s)\n", $name, $code);
}
/* close statement */
mysqli_stmt_close($stmt);
}
/* close connection */
mysqli_close($link);
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
Rockford (USA) Tallahassee (USA) Salinas (USA) Santa Clarita (USA) Springfield (USA)
Siehe auch
- mysqli_prepare() - Prepare a SQL statement for execution
- mysqli_stmt_errno() - Returns the error code for the most recent statement call
- mysqli_stmt_error() - Returns a string description for last statement error
- mysqli_stmt_bind_result() - Binds variables to a prepared statement for result storage