mysqli_stmt_bind_param
(PHP 5)
mysqli_stmt_bind_param
(no version information, might be only in CVS)
stmt->bind_param -- Binds variables to a prepared statement as parameters
Description
Procedural style:
bool
mysqli_stmt_bind_param ( object stmt, string types, mixed var1 [, mixed var2, ...])
Object oriented style (method):
class
stmt {
bool
bind_param ( array types, mixed var1 [, mixed var2, ...])
}
mysqli_stmt_bind_param() is used to bind variables for the
parameter markers in the SQL statement that was passed to
mysqli_prepare().
The string types contains one or more characters which specify
the types for the corresponding bind variables
表格 1. Type specification chars
| Character | Description |
|---|
| i | corresponding variable has type integer |
| d | corresponding variable has type double |
| s | corresponding variable has type string |
| b | corresponding variable is a blob and will be send in packages |
注:
If data size of a variable exceeds max. allowed package size
(max_allowed_package), you have to specify b in
types and use
mysqli_stmt_send_long_data() to send the data in packages.
The number of variables and length of
string types must match the parameters in the statement.
Return values
如果成功则返回 TRUE，失败则返回 FALSE。
Example
例子 1. Object oriented style
<?php
$mysqli = new mysqli('localhost', 'my_user', 'my_password', 'world');
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$stmt = $mysqli->prepare("INSERT INTO CountryLanguage VALUES (?, ?, ?, ?)");
$stmt->bind_param('sssd', $code, $language, $official, $percent);
$code = 'DEU';
$language = 'Bavarian';
$official = "F";
$percent = 11.2;
/* execute prepared statement */
$stmt->execute();
printf("%d Row inserted.\n", $stmt->affected_rows);
/* close statement and connection */
$stmt->close();
/* Clean up table CountryLanguage */
$mysqli->query("DELETE FROM CountryLanguage WHERE Language='Bavarian'");
printf("%d Row deleted.\n", $mysqli->affected_rows);
/* close connection */
$mysqli->close();
?>
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例子 2. Procedural style
<?php
$link = mysqli_connect('localhost', 'my_user', 'my_password', 'world');
/* check connection */
if (!$link) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$stmt = mysqli_prepare($link, "INSERT INTO CountryLanguage VALUES (?, ?, ?, ?)");
mysqli_stmt_bind_param($stmt, 'sssd', $code, $language, $official, $percent);
$code = 'DEU';
$language = 'Bavarian';
$official = "F";
$percent = 11.2;
/* execute prepared statement */
mysqi_stmt_execute($stmt);
printf("%d Row inserted.\n", mysqli_stmt_affected_rows($stmt));
/* close statement and connection */
mysqli_stmt_close($stmt);
/* Clean up table CountryLanguage */
mysqli_query($link, "DELETE FROM CountryLanguage WHERE Language='Bavarian'");
printf("%d Row deleted.\n", mysqli_affected_rows($link));
/* close connection */
mysqli_close($link);
?>
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The above examples would produce the following output:
1 Row inserted.
1 Row deleted. |