maxdb_fetch_fields

maxdb_result::fetch_fields

(PECL maxdb >= 1.0)

maxdb_fetch_fields -- maxdb_result::fetch_fields — Returns an array of resources representing the fields in a result set

说明

过程化风格

mixed maxdb_fetch_fields ( resource $result )

面向对象风格

mixed maxdb_result::fetch_fields ( void )

This function serves an identical purpose to the maxdb_fetch_field() function with the single difference that, instead of returning one resource at a time for each field, the columns are returned as an array of resources.

返回值

Returns an array of resources which contains field definition information or FALSE if no field information is available.

**Object properties**
Property	Description
name	The name of the column
max_length	The maximum width of the field for the result set.
type	The data type used for this field
decimals	The number of decimals used (for integer fields)

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 name, cno from hotel.customer ORDER BY cno" ;

if ( $result  =  $maxdb -> query ( $query )) {

    
    $finfo  =  $result -> fetch_fields ();

   foreach ( $finfo  as  $val ) {
        printf ( "Name:     %s\n" ,  $val -> name );
        printf ( "Table:    %s\n" ,  $val -> table );
        printf ( "max. Len: %d\n" ,  $val -> max_length );
        printf ( "Flags:    %d\n" ,  $val -> flags );
        printf ( "Type:     %d\n\n" ,  $val -> type );
   }
    $result -> 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 name, cno from hotel.customer ORDER BY cno" ;

if ( $result  =  maxdb_query ( $link ,  $query )) {

    
    $finfo  =  maxdb_fetch_fields ( $result );

   foreach ( $finfo  as  $val ) {
        printf ( "Name:     %s\n" ,  $val -> name );
        printf ( "Table:    %s\n" ,  $val -> table );
        printf ( "max. Len: %d\n" ,  $val -> max_length );
        printf ( "Flags:    %d\n" ,  $val -> flags );
        printf ( "Type:     %d\n\n" ,  $val -> type );
   }
    maxdb_free_result ( $result );
}

 
 maxdb_close ( $link );
 ?>

以上例程的输出类似于：

Name:     NAME
Table:
max. Len: 10
Flags:    -1
Type:     2Name:     CNO
Table:
max. Len: 4
Flags:    -1
Type:     0

参见

maxdb_num_fields() - Get the number of fields in a result
maxdb_fetch_field() - Returns the next field in the result set
maxdb_fetch_field_direct() - Fetch meta-data for a single field