(PECL maxdb >= 1.0)
maxdb_stmt_param_count -- maxdb_stmt->param_count — Returns the number of parameter for the given statement
过程化风格
面向对象风格
maxdb_stmt_param_count() returns the number of parameter markers present in the prepared statement.
returns an integer representing the number of parameters.
Example #1 Object oriented style
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if ($stmt = $maxdb->prepare("SELECT name FROM hotel.city WHERE name=? OR state=?")) {
$marker = $stmt->param_count;
printf("Statement has %d markers.\n", $marker);
/* close statement */
$stmt->close();
}
/* close connection */
$maxdb->close();
?>
Example #2 Procedural style
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if ($stmt = maxdb_prepare($link, "SELECT name FROM hotel.city WHERE name=? OR state=?")) {
$marker = maxdb_stmt_param_count($stmt);
printf("Statement has %d markers.\n", $marker);
/* close statement */
maxdb_stmt_close($stmt);
}
/* close connection */
maxdb_close($link);
?>
以上例程的输出类似于：
Statement has 2 markers.