sqlite 数据库连接类
sqlite 数据库连接类就是利用了php 与sqlite进行连接操作,代码如下:
- */
- lass db_class {
- var $conn=null;
- var $querynum = 0;
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- function connect($dbhost, $pconnect = 0) {
- $error = '';
- $func = $pconnect == 1 ? 'sqlite_popen' : 'sqlite_open';
- if (!$this -> conn = $func($dbhost, 0666, $error)) {
- $this -> halt($error);
- }
- return $this -> conn;
- }
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- function query($sql , $type = '' , $expires = 3600, $dbname = '') {
- $error = '';
- $func = $type == 'unbuffered' ? 'sqlite_unbuffered_query' : 'sqlite_query';
- if (preg_match("/^s*select/i", $sql)) {
- $query = $func($this -> conn, $sql, sqlite_assoc, $error);
- } else {
- $query = sqlite_exec($this -> conn, $sql, $error);
- }
- if ($error) {
- $this -> halt($error, $sql);
- }
- $this -> querynum++;
- return $query;
- }
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- function getlist($table , $wheres = "1=1", $colums = '*' ,$limits = '3000',$orderbys="id desc") {
- $query = $this -> query("select ".$colums." from ".$table." where ".$wheres." order by ".$orderbys." limit ".$limits, $type, $expires, $dbname);
- while($rs = $this -> fetch_array($query)){
- $datas[]=$rs;
- }
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- $this -> free_result($query);
- return $datas ;
- }
- function add_one($table , $colums ,$data ) {
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- $query = $this -> query("insert into ".$table." (".$colums.") values(".$data.")", $type, $expires, $dbname);
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- return $query;
- }
- function delist($table , $idarray,$wheres="no") {
- if($wheres=='no')
- $query = $this -> query("delete from ".$table." where id in(".$idarray.")", $type, $expires, $dbname);
- else
- $query = $this -> query("delete from ".$table." where ".$wheres, $type, $expires, $dbname);
- return $query;
- }
- function updatelist($table , $updatedata,$idarray) {
- $query = $this -> query("update ".$table." set ". $updatedata." where id in(".$idarray.")", $type, $expires, $dbname);
- return $query;
- }
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- function get_one($sql, $type = '', $expires = 3600, $dbname = '') {
- $query = $this -> query($sql, $type, $expires, $dbname);
- $rs = $this -> fetch_array($query);
- $this -> free_result($query);
- return $rs ;
- }
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- function fetch_array($query, $result_type = sqlite_assoc) {
- return sqlite_fetch_array($query, $result_type);
- }
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- function affected_rows() {
- return sqlite_changes($this -> conn);
- }
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- function num_rows($query) {
- return sqlite_num_rows($query);
- }
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- function num_fields($query) {
- return sqlite_num_fields($query);
- }
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- function result($query, $row) {
- return @sqlite_fetch_all($query, sqlite_assoc);
- }
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- function free_result($query) {
- return ;
- }
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- function insert_id() {
- return sqlite_last_insert_rowid($this -> connid);
- }
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- function fetch_row($query) {
- return sqlite_fetch_array($query, sqlite_num);
- }
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- function fetch_assoc($query) {
- return $this -> fetch_array($query, sqlite_assoc);
- }
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- function version() {
- return sqlite_libversion();
- }
- function close() {
- return sqlite_close($this -> conn);
- }
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- function error() {
- return sqlite_error_string($this -> errno);
- }
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- function errno() {
- return sqlite_last_error($this -> conn);
- }
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- function halt($message = '', $sql = '') {
- exit("sqlitequery:$sql <br> sqliteerror:" . $this -> error() . " <br> sqliteerrno:" . $this -> errno() . " <br> message:$message");
- }