maxdb_rollback(3) [php man page]

MAXDB_ROLLBACK(3)							 1							 MAXDB_ROLLBACK(3)

maxdb_rollback - Rolls back current transaction

       Procedural style

SYNOPSIS

       bool maxdb_rollback (resource  $link)

DESCRIPTION

       Object oriented style
       bool maxdb::rollback (void  )

	Rollbacks the current transaction for the database specified by the $link parameter.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      Object oriented style

	      <?php
	      $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");

	      /* check connection */
	      if (maxdb_connect_errno()) {
		 printf("Connect failed: %s
", maxdb_connect_error());
		 exit();
	      }

	      /* disable autocommit */
	      $maxdb->autocommit(FALSE);

	      $maxdb->query("CREATE TABLE temp.mycity LIKE hotel.city");
	      $maxdb->query("INSERT INTO temp.mycity SELECT * FROM hotel.city");

	      /* commit insert */
	      $maxdb->commit();

	      /* delete all rows */
	      $maxdb->query("DELETE FROM temp.mycity");

	      if ($result = $maxdb->query("SELECT COUNT(*) FROM temp.mycity")) {
		 $row = $result->fetch_row();
		 printf("%d rows in table mycity.
", $row[0]);
		 /* Free result */
		 $result->close();
	      }

	      /* Rollback */
	      $maxdb->rollback();

	      if ($result = $maxdb->query("SELECT COUNT(*) FROM temp.mycity")) {
		 $row = $result->fetch_row();
		 printf("%d rows in table mycity (after rollback).
", $row[0]);
		 /* Free result */
		 $result->close();
	      }

	      /* Drop table myCity */
	      $maxdb->query("DROP TABLE temp.mycity");

	      $maxdb->close();
	      ?>

       Example #2

	      Procedural style

	      <?php
	      $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");

	      /* check connection */
	      if (maxdb_connect_errno()) {
		 printf("Connect failed: %s
", maxdb_connect_error());
		 exit();
	      }

	      /* disable autocommit */
	      maxdb_autocommit($link, FALSE);

	      maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city");
	      maxdb_query($link, "INSERT INTO temp.mycity SELECT * FROM hotel.city");

	      /* commit insert */
	      maxdb_commit($link);

	      /* delete all rows */
	      maxdb_query($link, "DELETE FROM temp.mycity");

	      if ($result = maxdb_query($link, "SELECT COUNT(*) FROM temp.mycity")) {
		 $row = maxdb_fetch_row($result);
		 printf("%d rows in table mycity.
", $row[0]);
		 /* Free result */
		 maxdb_free_result($result);
	      }

	      /* Rollback */
	      maxdb_rollback($link);

	      if ($result = maxdb_query($link, "SELECT COUNT(*) FROM temp.mycity")) {
		 $row = maxdb_fetch_row($result);
		 printf("%d rows in table mycity (after rollback).
", $row[0]);
		 /* Free result */
		 maxdb_free_result($result);
	      }

	      /* Drop table myCity */
	      maxdb_query($link, "DROP TABLE temp.mycity");

	      maxdb_close($link);
	      ?>

       The above example will output something similar to:

       0 rows in table mycity.
       25 rows in table mycity (after rollback).

SEE ALSO

       maxdb_commit(3), maxdb_autocommit(3).

PHP Documentation Group 													 MAXDB_ROLLBACK(3)

Check Out this Related Man Page

MAXDB_WARNING_COUNT(3)							 1						    MAXDB_WARNING_COUNT(3)

maxdb_warning_count - Returns the number of warnings from the last query for the given link

       Procedural style

SYNOPSIS

       int maxdb_warning_count (resource  $link)

DESCRIPTION

       Object oriented style
       int$maxdb->warning_count ()

       maxdb_warning_count(3) returns the number of warnings from the last query in the connection represented by the $link parameter.

RETURN VALUES

	Number of warnings or zero if there are no warnings.

EXAMPLES

       Example #1

	      Object oriented style

	      <?php
	      $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");

	      /* check connection */
	      if (maxdb_connect_errno()) {
		 printf("Connect failed: %s
", maxdb_connect_error());
		 exit();
	      }

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

	      /* a remarkable city in Wales */
	      $query = "INSERT INTO temp.mycity (zip, name) VALUES('11111',
		     'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')";

	      $maxdb->query($query);

	      printf ("Number of warning: %d
", $maxdb->warning_count);

	      /* close connection */
	      $maxdb->close();
	      ?>

       Example #2

	      Procedural style

	      <?php
	      $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");

	      /* check connection */
	      if (maxdb_connect_errno()) {
		 printf("Connect failed: %s
", maxdb_connect_error());
		 exit();
	      }

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

	      /* a remarkable long city name in Wales */
	      $query = "INSERT INTO temp.mycity (zip, name) VALUES('11111',
		     'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')";

	      maxdb_query($link, $query);

	      printf ("Number of warning: %d
", maxdb_warning_count($link));

	      /* close connection */
	      maxdb_close($link);
	      ?>

       The above example will output something similar to:

       Warning: maxdb_query(): -8004 POS(62) Constant must be compatible with column type and length <...>
       Number of warning: 0

SEE ALSO

       maxdb_errno(3), maxdb_error(3), maxdb_sqlstate(3).

PHP Documentation Group 												    MAXDB_WARNING_COUNT(3)

Linux and UNIX Man Pages

maxdb_rollback(3) [php man page]

Check Out this Related Man Page