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mysqli_stmt::bind_result
(PHP 5)
mysqli_stmt::bind_result -- mysqli_stmt_bind_result — Binds variables to a prepared statement for result storage
Beschreibung
Object oriented style (method):
Procedural style:
Binds columns in the result set to variables.
When mysqli_stmt_fetch() is called to fetch data, the MySQL client/server protocol places the data for the bound columns into the specified variables var1, ... .
Hinweis: Note that all columns must be bound after mysqli_stmt_execute() and prior to calling mysqli_stmt_fetch(). Depending on column types bound variables can silently change to the corresponding PHP type.
A column can be bound or rebound at any time, even after a result set has been partially retrieved. The new binding takes effect the next time mysqli_stmt_fetch() is called.
Parameter-Liste
- stmt
-
Nur bei prozeduralem Aufruf: ein von mysqli_stmt_init() zurückgegebens Statementobjekt.
- var1
-
The variable to be bound.
Rückgabewerte
Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben.
Beispiele
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$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* prepare statement */
if ($stmt = $mysqli->prepare("SELECT Code, Name FROM Country ORDER BY Name LIMIT 5")) {
$stmt->execute();
/* bind variables to prepared statement */
$stmt->bind_result($col1, $col2);
/* fetch values */
while ($stmt->fetch()) {
printf("%s %s\n", $col1, $col2);
}
/* close statement */
$stmt->close();
}
/* close connection */
$mysqli->close();
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$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (!$link) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* prepare statement */
if ($stmt = mysqli_prepare($link, "SELECT Code, Name FROM Country ORDER BY Name LIMIT 5")) {
mysqli_stmt_execute($stmt);
/* bind variables to prepared statement */
mysqli_stmt_bind_result($stmt, $col1, $col2);
/* fetch values */
while (mysqli_stmt_fetch($stmt)) {
printf("%s %s\n", $col1, $col2);
}
/* close statement */
mysqli_stmt_close($stmt);
}
/* close connection */
mysqli_close($link);
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
AFG Afghanistan ALB Albania DZA Algeria ASM American Samoa AND Andorra
Siehe auch
- mysqli_stmt_bind_param() - Binds variables to a prepared statement as parameters
- mysqli_stmt_execute() - Executes a prepared Query
- mysqli_stmt_fetch() - Fetch results from a prepared statement into the bound variables
- mysqli_prepare() - Prepare a SQL statement for execution
- mysqli_stmt_prepare() - Prepare a SQL statement for execution
- mysqli_stmt_init() - Initializes a statement and returns an object for use with mysqli_stmt_prepare
- mysqli_stmt_errno() - Returns the error code for the most recent statement call
- mysqli_stmt_error() - Returns a string description for last statement error