maxdb_stmt_param_count

maxdb_stmt::param_count

(PECL maxdb >= 1.0)

maxdb_stmt_param_count -- maxdb_stmt::param_count — Returns the number of parameter for the given statement

说明

过程化风格

int maxdb_stmt_param_count ( resource $stmt )

面向对象风格

int $maxdb_stmt->param_count;

maxdb_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.

范例

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.

参见

maxdb_prepare() - Prepare an SQL statement for execution