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(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
$stmt
)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 面向对象风格
<?php
$maxdb = new maxdb ( "localhost" , "MONA" , "RED" , "DEMODB" );
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 );
$stmt -> close ();
}
$maxdb -> close ();
?>
Example #2 过程化风格
<?php
$link = maxdb_connect ( "localhost" , "MONA" , "RED" , "DEMODB" );
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 );
maxdb_stmt_close ( $stmt );
}
maxdb_close ( $link );
?>
以上例程的输出类似于:
Statement has 2 markers.