mysqli_stmt_param_count
(PHP 5)
mysqli_stmt_param_count
(no version information, might be only in CVS)
stmt->param_count -- Returns the number of parameter for the given statement
Description
Procedural style:
int
mysqli_stmt_param_count ( mysqli_stmt stmt )
Object oriented style (property):
class
mysqli_stmt {
int param_count
}
mysqli_stmt_param_count() returns the number of parameter
markers present in the prepared statement.
返回值
returns an integer representing the number of parameters.
例
例子 1. Object oriented style
<?php $mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); }
if ($stmt = $mysqli->prepare("SELECT Name FROM Country WHERE Name=? OR Code=?")) {
$marker = $stmt->param_count; printf("Statement has %d markers.\n", $marker);
/* close statement */ $stmt->close(); }
/* close connection */ $mysqli->close(); ?>
|
|
例子 2. Procedural style
<?php $link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); }
if ($stmt = mysqli_prepare($link, "SELECT Name FROM Country WHERE Name=? OR Code=?")) {
$marker = mysqli_stmt_param_count($stmt); printf("Statement has %d markers.\n", $marker);
/* close statement */ mysqli_stmt_close($stmt); }
/* close connection */ mysqli_close($link); ?>
|
|
上例将输出: