maxdb_error

maxdb::error

(PECL maxdb >= 1.0)

maxdb_error -- maxdb::error — Returns a string description of the last error

说明

过程化风格

string maxdb_error ( resource $link )

面向对象风格

string $maxdb->error;

The maxdb_error() function is identical to the corresponding maxdb_errno() function in every way, except instead of returning an integer error code the maxdb_error() function will return a string representation of the last error to occur for the database connection represented by the link parameter. If no error has occurred, this function will return an empty string.

返回值

A string that describes the error. An empty string if no error occurred.

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 (! $maxdb -> query ( "SELECT xxx FROM hotel.city" )) {
    printf ( "Errormessage: %s\n" ,  $maxdb -> error );
}

 
 $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 (! maxdb_query ( $link ,  "SELECT xxx FROM hotel.city" )) {
    printf ( "Errormessgae: %s\n" ,  maxdb_error ( $link ));
}

 
 maxdb_close ( $link );
 ?>

以上例程的输出类似于：

PHP Warning:  maxdb_query(): -4005 POS(8) Unknown column name:XXX [42000]
Errormessgae: POS(8) Unknown column name:XXX

参见

maxdb_connect_errno() - Returns the error code from last connect call
maxdb_connect_error() - Returns a string description of the last connect error
maxdb_errno() - Returns the error code for the most recent function call
maxdb_sqlstate() - Returns the SQLSTATE error from previous MaxDB operation