maxdb_stmt_affected_rows

maxdb_stmt::affected_rows

(PECL maxdb >= 1.0)

maxdb_stmt_affected_rows -- maxdb_stmt::affected_rows — Returns the total number of rows changed, deleted, or inserted by the last executed statement

说明

过程化风格

int maxdb_stmt_affected_rows ( resource $stmt )

面向对象风格

int $maxdb_stmt->affected_rows;

maxdb_stmt_affected_rows() returns the number of rows affected by INSERT, UPDATE, or DELETE query. If the last query was invalid or the number of rows can not determined, this function will return -1.

返回值

An integer greater than zero indicates the number of rows affected or retrieved. Zero indicates that no records where updated for an UPDATE/DELETE statement, no rows matched the WHERE clause in the query or that no query has yet been executed. -1 indicates that the query has returned an error or the number of rows can not determined.

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();
}

 
 $maxdb -> query ( "CREATE TABLE temp.mycity LIKE hotel.city" );

 $query  =  "INSERT INTO temp.mycity SELECT * FROM hotel.city WHERE state LIKE ?" ;

 
 if ( $stmt  =  $maxdb -> prepare ( $query )) {

    
    $code  =  'N%' ;
    $stmt -> bind_param ( "s" ,  $code );

    
    $stmt -> execute ();

    printf ( "rows inserted: %d\n" ,  $stmt -> affected_rows );

    
    $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();
}

 
 maxdb_query ( $link ,  "CREATE TABLE temp.mycity LIKE hotel.city" );

 $query  =  "INSERT INTO temp.mycity SELECT * FROM hotel.city WHERE state LIKE ?" ;

 
 if ( $stmt  =  maxdb_prepare ( $link ,  $query )) {

    
    $code  =  'N%' ;
    maxdb_stmt_bind_param ( $stmt ,  "s" ,  $code );

    
    maxdb_stmt_execute ( $stmt );

    printf ( "rows inserted: %d\n" ,  maxdb_stmt_affected_rows ( $stmt ));

    
    maxdb_stmt_close ( $stmt );
}

 
 maxdb_close ( $link );
 ?>

以上例程的输出类似于：

rows inserted: 4

参见

maxdb_stmt_num_rows() - Return the number of rows in statements result set
maxdb_prepare() - Prepare an SQL statement for execution