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 ( mysqli_stmt stmt, string types, mixed &var1 [, mixed &...] )
Object oriented style (method):
class
mysqli_stmt {
bool
bind_param ( string types, mixed &var1 [, mixed &...] )
}
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.
返回值
如果成功则返回 TRUE，失败则返回 FALSE。
例
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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上例将输出：
1 Row inserted.
1 Row deleted. |