mysql分卷备份程序

<?php /*************************************************************************** * mysql.php * ------------------- * begin : Saturday, Feb 13, 2001 * copyright : (C) 2001 The phpBB Group * email : support@phpbb.com * * $Id: mysql.php 1 2007-08-24 10:55:13Z ggg $ * ***************************************************************************/ /*************************************************************************** * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * ***************************************************************************/ if(!defined("SQL_LAYER")) { define("SQL_LAYER","mysql"); class sql_db { var $db_connect_id; var $query_result; var $row = array(); var $rowset = array(); var $num_queries = 0; // // Constructor // function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true) { $this->persistency = $persistency; $this->user = $sqluser; $this->password = $sqlpassword; $this->server = $sqlserver; $this->dbname = $database; if($this->persistency) { $this->db_connect_id = @mysql_pconnect($this->server, $this->user, $this->password); } else { $this->db_connect_id = @mysql_connect($this->server, $this->user, $this->password); } if($this->db_connect_id) { if($database != "") { $this->dbname = $database; $dbselect = @mysql_select_db($this->dbname); if(!$dbselect) { @mysql_close($this->db_connect_id); $this->db_connect_id = $dbselect; } } return $this->db_connect_id; } else { return false; } } // // Other base methods // function sql_close() { if($this->db_connect_id) { if($this->query_result) { @mysql_free_result($this->query_result); } $result = @mysql_close($this->db_connect_id); return $result; } else { return false; } } // // Base query method // function sql_query($query = "", $transaction = FALSE) { // Remove any pre-existing queries unset($this->query_result); // echo $query; // die(); if($query != "") { $this->query_result = mysql_query($query, $this->db_connect_id); } if($this->query_result) { unset($this->row[$this->query_result]); unset($this->rowset[$this->query_result]); return $this->query_result; } else { // if (!$transaction) { return false; } $result = $this->sql_error(); echo $result["message"]; die(); // throw_error($result["code"],$result["message"]."\n\n".$query); // GggOops::loadClass('gggoops_db_Exception_SqlQuery'); // __THROW(new gggoops_db_Exception_SqlQuery($sql, $result["message"], $result["code"])); } return false; } // // Other query methods // function sql_numrows($query_id = 0) { if(!$query_id) { $query_id = $this->query_result; } if($query_id) { $result = @mysql_num_rows($query_id); return $result; } else { return false; } } function sql_affectedrows() { if($this->db_connect_id) { $result = @mysql_affected_rows($this->db_connect_id); return $result; } else { return false; } } function sql_numfields($query_id = 0) { if(!$query_id) { $query_id = $this->query_result; } if($query_id) { $result = @mysql_num_fields($query_id); return $result; } else { return false; } } function sql_fieldname($offset, $query_id = 0) { if(!$query_id) { $query_id = $this->query_result; } if($query_id) { $result = @mysql_field_name($query_id, $offset); return $result; } else { return false; } } function sql_fieldtype($offset, $query_id = 0) { if(!$query_id) { $query_id = $this->query_result; } if($query_id) { $result = @mysql_field_type($query_id, $offset); return $result; } else { return false; } } function sql_fetchrow($query_id = 0,$result_type=MYSQL_ASSOC) { if(!$query_id) { $query_id = $this->query_result; } if($query_id) { $this->row[$query_id] = @mysql_fetch_array($query_id,$result_type); return $this->row[$query_id]; } else { return false; } } function fetchAssoc($res) { return mysql_fetch_assoc($res); } function sql_fetchrowset($query_id = 0) { if(!$query_id) { $query_id = $this->query_result; } if($query_id) { unset($this->rowset[$query_id]); unset($this->row[$query_id]); while($this->rowset[$query_id] = @mysql_fetch_array($query_id)) { $result[] = $this->rowset[$query_id]; } return $result; } else { return false; } } function sql_fetchfield($field, $rownum = -1, $query_id = 0) { if(!$query_id) { $query_id = $this->query_result; } if($query_id) { if($rownum > -1) { $result = @mysql_result($query_id, $rownum, $field); } else { if(empty($this->row[$query_id]) && empty($this->rowset[$query_id])) { if($this->sql_fetchrow()) { $result = $this->row[$query_id][$field]; } } else { if($this->rowset[$query_id]) { $result = $this->rowset[$query_id][$field]; } else if($this->row[$query_id]) { $result = $this->row[$query_id][$field]; } } } return $result; } else { return false; } } function sql_rowseek($rownum, $query_id = 0){ if(!$query_id) { $query_id = $this->query_result; } if($query_id) { $result = @mysql_data_seek($query_id, $rownum); return $result; } else { return false; } } function sql_nextid() { if($this->db_connect_id) { $result = @mysql_insert_id($this->db_connect_id); return $result; } else { return false; } } function sql_freeresult($query_id = 0) { if(!$query_id) { $query_id = $this->query_result; } if ( $query_id ) { unset($this->row[$query_id]); unset($this->rowset[$query_id]); @mysql_free_result($query_id); return true; } else { return false; } } function sql_error($query_id = 0) { $result["message"] = mysql_error($this->db_connect_id); $result["code"] = mysql_errno($this->db_connect_id); // $result["message"] = @mysql_error($this->db_connect_id); // $result["code"] = @mysql_errno($this->db_connect_id); return $result; } } // class sql_db } // if ... define ?>