maxdb_info

maxdb::info

(PECL maxdb >= 1.0)

maxdb_info -- maxdb::info — Retrieves information about the most recently executed query

说明

过程化风格

string maxdb_info ( resource $link )

面向对象风格

string $maxdb->info;

The maxdb_info() function returns a string providing information about the last query executed. The nature of this string is provided below:

**Possible maxdb_info return values**
Query type	Example result string
INSERT INTO...SELECT...	Records: 100 Duplicates: 0 Warnings: 0
INSERT INTO...VALUES (...),(...),(...)	Records: 3 Duplicates: 0 Warnings: 0
LOAD DATA INFILE ...	Records: 1 Deleted: 0 Skipped: 0 Warnings: 0
ALTER TABLE ...	Records: 3 Duplicates: 0 Warnings: 0
UPDATE ...	Rows matched: 40 Changed: 40 Warnings: 0

Note:

Queries which do not fall into one of the above formats are not supported. In these situations, maxdb_info() will return an empty string.

返回值

A character string representing additional information about the most recently executed query.

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.t1 LIKE hotel.city" );

 
 $maxdb -> query ( "INSERT INTO temp.t1 SELECT * FROM hotel.city" );
 printf ( "%s\n" ,  $maxdb -> info );

 
 $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.t1 LIKE hotel.city" );

 
 maxdb_query ( $link ,  "INSERT INTO temp.t1 SELECT * FROM hotel.city" );
 printf ( "%s\n" ,  maxdb_info ( $link ));

 
 maxdb_close ( $link );
 ?>

以上例程的输出类似于：

Records: 25 Duplicates: 0 Warnings: 0

参见

maxdb_affected_rows() - Gets the number of affected rows in a previous MaxDB operation
maxdb_warning_count() - Returns the number of warnings from the last query for the given link
maxdb_num_rows() - Gets the number of rows in a result