maxdb_stmt_fetch

maxdb_stmt::fetch

(PECL maxdb >= 1.0)

maxdb_stmt_fetch -- maxdb_stmt::fetch — Fetch results from a prepared statement into the bound variables

说明

过程化风格

bool maxdb_stmt_fetch ( resource $stmt )

面向对象风格

bool maxdb_stmt::fetch ( void )

maxdb_stmt_fetch() returns row data using the variables bound by maxdb_stmt_bind_result() .

Note:

Note that all columns must be bound by the application before calling maxdb_stmt_fetch() .

返回值

**Return values**
Value	Description
`TRUE`	Success. Data has been fetched
`FALSE`	Error occurred
`NULL`	No more rows/data exists

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();
}

 $query  =  "SELECT zip, name FROM hotel.city ORDER by name" ;

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

    
    $stmt -> execute ();

    
    $stmt -> bind_result ( $name ,  $code );

    
    while ( $stmt -> fetch ()) {
        printf  ( "%s (%s)\n" ,  $name ,  $code );
   }

    
    $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();
}

 $query  =  "SELECT zip, name FROM hotel.city ORDER by name" ;

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

    
    maxdb_stmt_execute ( $stmt );

    
    maxdb_stmt_bind_result ( $stmt ,  $name ,  $code );

    
    while ( maxdb_stmt_fetch ( $stmt )) {
        printf  ( "%s (%s)\n" ,  $name ,  $code );
   }

    
    maxdb_stmt_close ( $stmt );
}

 
 maxdb_close ( $link );
 ?>

以上例程的输出类似于：

12203 (Albany)
60601 (Chicago)
60615 (Chicago)
45211 (Cincinnati)
33575 (Clearwater)
75243 (Dallas)
32018 (Daytona Beach)
33441 (Deerfield Beach)
48226 (Detroit)
90029 (Hollywood)
92714 (Irvine)
90804 (Long Beach)
11788 (Long Island)
90018 (Los Angeles)
70112 (New Orleans)
10019 (New York)
10580 (New York)
92262 (Palm Springs)
97213 (Portland)
60018 (Rosemont)
95054 (Santa Clara)
20903 (Silver Spring)
20005 (Washington)
20019 (Washington)
20037 (Washington)

参见

maxdb_prepare() - Prepare an SQL statement for execution
maxdb_stmt_errno() - Returns the error code for the most recent statement call
maxdb_stmt_error() - Returns a string description for last statement error
maxdb_stmt_bind_result() - Binds variables to a prepared statement for result storage