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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 说明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 &...] ) }
Bind variables for the parameter markers in the SQL statement that was
passed to mysqli_prepare().
注意:
If data size of a variable exceeds max. allowed packet size
(max_allowed_packet), you have to specify b in
types and use
mysqli_stmt_send_long_data() to send the data in packets.
参数
stmtProcedural style only: A statement identifier
returned by mysqli_stmt_init(). types
A string that contains one or more characters which specify the types
for the corresponding bind variables:
表 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 sent in packets |
var1
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。
范例例 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 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";
$percent = 11.2;
/* execute prepared statement */
mysqli_stmt_execute($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. |
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