Three MySQL + SQLite + pdo php database classes are supported at the same time.

PHP tutorial Introduction: Three MySQL + SQLite + pdo php database classes are supported at the same time: // mysql connect $ db = new SQL (mysql: host = localhost; database = 21andy_blog;, 21andy.com _ user, 21andy.com _ password); // PDO SQLite3 connect $ db = new SQL (pdo: database =/21andy.com/21andy.s

Three MySQL + SQLite + pdo php database classes are supported at the same time:

// Mysql connect

$ Db = new SQL ('mysql: host = localhost; database = 21andy_blog; ', '21andy. com_user', '21andy. com_password ');

// PDO SQLite3 connect

$ Db = new SQL ('pdo: database =/21andy.com/21andy.sqlite3 ;');

// SQLite2 connect

$ Db = new SQL ('sqlite: database =/21andy.com/21andy.sqlite ;');

Sqldbs. class. php file

/*

SQL Buddy-Web based MySQL administration

Sqldbs. class. php

-SQL class

MIT license

*/

Class SQL {

Var $ adapter = "";

Var $ method = "";

Var $ version = "";

Var $ conn = "";

Var $ options = "";

Var $ errorMessage = "";

Var $ db = "";

Function SQL ($ connString, $ user = "", $ pass = ""){

List ($ this-> adapter, $ options) = explode (":", $ connString, 2 );

If ($ this-> adapter! = "Sqlite "){

$ This-> adapter = "mysql ";

}

$ OptionsList = explode (";", $ options );

Foreach ($ optionsList as $ option ){

List ($ a, $ B) = explode ("=", $ option );

$ Opt [$ a] = $ B;

}

$ This-> options = $ opt;

$ Database = (array_key_exists ("database", $ opt ))? $ Opt ['database']: "";

If ($ this-> adapter = "sqlite" & substr (sqlite_libversion (), 0, 1) = "3" & class_exists ("PDO ") & in_array ("sqlite", PDO: getAvailableDrivers ())){

$ This-> method = "pdo ";

Try

{

$ This-> conn = new PDO ("sqlite:". $ database, null, null, array (PDO: ATTR_PERSISTENT => true ));

}

Catch (PDOException $ error ){

$ This-> conn = false;

$ This-> errorMessage = $ error-> getMessage ();

}

} Else if ($ this-> adapter = "sqlite" & substr (sqlite_libversion (), 0, 1) = "2" & class_exists ("PDO ") & in_array ("sqlite2", PDO: getAvailableDrivers ())){

$ This-> method = "pdo ";

Try

{

$ This-> conn = new PDO ("sqlite2:". $ database, null, null, array (PDO: ATTR_PERSISTENT => true ));

}

Catch (PDOException $ error ){

$ This-> conn = false;

$ This-> errorMessage = $ error-> getMessage ();

}

} Else if ($ this-> adapter = "sqlite "){

$ This-> method = "sqlite ";

$ This-> conn = sqlite_open ($ database, 0666, $ sqliteError );

} Else {

$ This-> method = "mysql ";

$ Host = (array_key_exists ("host", $ opt ))? $ Opt ['host']: "";

$ This-> conn = @ mysql_connect ($ host, $ user, $ pass );

}

If ($ this-> conn & $ this-> method = "pdo "){

$ This-> conn-> setAttribute (PDO: ATTR_ERRMODE, PDO: ERRMODE_SILENT );

}

If ($ this-> conn & $ this-> adapter = "mysql "){

$ This-> query ("set names 'utf8 '");

}

If ($ this-> conn & $ database ){

$ This-> db = $ database;

}

}

Function isConnected (){

Return ($ this-> conn! = False );

}

Function close (){

Return $ this-> disconnect ();

}

Function disconnect (){

If ($ this-> conn ){

If ($ this-> method = "pdo "){

$ This-> conn = null;

} Else if ($ this-> method = "mysql "){

Mysql_close ($ this-> conn );

$ This-> conn = null;

} Else if ($ this-> method = "sqlite "){

Sqlite_close ($ this-> conn );

$ This-> conn = null;

}

}

}

Function getAdapter (){

Return $ this-> adapter;

}

Function getMethod (){

Return $ this-> method;

}

Function getOptionValue ($ optKey ){

If (array_key_exists ($ optKey, $ this-> options )){

Return $ this-> options [$ optKey];

} Else {

Return false;

}

}

Function selectDB ($ db ){

If ($ this-> conn ){

If ($ this-> method = "mysql "){

$ This-> db = $ db;

Return (mysql_select_db ($ db ));

} Else {

Return true;

}

} Else {

Return false;

}

}

Function query ($ queryText ){

If ($ this-> conn ){

If ($ this-> method = "pdo "){

$ QueryResult = $ this-> conn-> prepare ($ queryText );

If ($ queryResult)

$ QueryResult-> execute ();

If (! $ QueryResult ){

$ ErrorInfo = $ this-> conn-> errorInfo ();

$ This-> errorMessage = $ errorInfo [2];

}

Return $ queryResult;

} Else if ($ this-> method = "mysql "){

$ QueryResult = @ mysql_query ($ queryText, $ this-> conn );

If (! $ QueryResult ){

$ This-> errorMessage = mysql_error ();

}

Return $ queryResult;

} Else if ($ this-> method = "sqlite "){

$ QueryResult = sqlite_query ($ this-> conn, $ queryText );

If (! $ QueryResult ){

$ This-> errorMessage = sqlite_error_string (sqlite_last_error ($ this-> conn ));

}

Return $ queryResult;

}

} Else {

Return false;

}

}

// Be careful using this function-when used with pdo, the pointer is moved

// To the end of the result set and the query needs to be rerun. Unless you

// Actually need a count of the rows, use the isResultSet () function instead

Function rowCount ($ resultSet ){

If (! $ ResultSet)

Return false;

If ($ this-> conn ){

If ($ this-> method = "pdo "){

Return count ($ resultSet-> fetchAll ());

} Else if ($ this-> method = "mysql "){

Return @ mysql_num_rows ($ resultSet );

} Else if ($ this-> method = "sqlite "){

Return @ sqlite_num_rows ($ resultSet );

}

}

}

Function num_rows ($ res ){

Return $ this-> rowCount ($ res );

}

Function isResultSet ($ resultSet ){

If ($ this-> conn ){

If ($ this-> method = "pdo "){

Return ($ resultSet = true );

} Else {

Return ($ this-> rowCount ($ resultSet)> 0 );

}

}

}

Function fetch ($ res ){

Return $ this-> fetchAssoc ($ res );

}

Function fetchArray ($ resultSet ){

If (! $ ResultSet)

Return false;

If ($ this-> conn ){

If ($ this-> method = "pdo "){

Return $ resultSet-> fetch (PDO: FETCH_NUM );

} Else if ($ this-> method = "mysql "){

Return mysql_fetch_row ($ resultSet );

} Else if ($ this-> method = "sqlite "){

Return sqlite_fetch_array ($ resultSet, SQLITE_NUM );

}

}

}

Function fetchAssoc ($ resultSet ){

If (! $ ResultSet)

Return false;

If ($ this-> conn ){

If ($ this-> method = "pdo "){

Return $ resultSet-> fetch (PDO: FETCH_ASSOC );

} Else if ($ this-> method = "mysql "){

Return mysql_fetch_assoc ($ resultSet );

} Else if ($ this-> method = "sqlite "){

Return sqlite_fetch_array ($ resultSet, SQLITE_ASSOC );

}

}

}

Function affectedRows ($ resultSet ){

If (! $ ResultSet)

Return false;

If ($ this-> conn ){

If ($ this-> method = "pdo "){

Return $ resultSet-> rowCount ();

} Else if ($ this-> method = "mysql "){

Return @ mysql_affected_rows ($ resultSet );

} Else if ($ this-> method = "sqlite "){

Return sqlite_changes ($ resultSet );

}

}

}

Function result ($ resultSet, $ targetRow, $ targetColumn = ""){

If (! $ ResultSet)

Return false;

If ($ this-> conn ){

If ($ this-> method = "pdo "){

If ($ targetColumn ){

$ ResultRow = $ resultSet-> fetch (PDO: FETCH_ASSOC, PDO: FETCH_ORI_ABS, $ targetRow );

Return $ resultRow [$ targetColumn];

} Else {

$ ResultRow = $ resultSet-> fetch (PDO: FETCH_NUM, PDO: FETCH_ORI_ABS, $ targetRow );

Return $ resultRow [0];

}

} Else if ($ this-> method = "mysql "){

Return mysql_result ($ resultSet, $ targetRow, $ targetColumn );

} Else if ($ this-> method = "sqlite "){

Return sqlite_column ($ resultSet, $ targetColumn );

}

}

}

Function listDatabases (){

If ($ this-> conn ){

If ($ this-> adapter = "mysql "){

Return $ this-> query ("show databases ");

} Else if ($ this-> adapter = "sqlite "){

Return $ this-> db;

}

}

}

Function listTables (){

If ($ this-> conn ){

If ($ this-> adapter = "mysql "){

Return $ this-> query ("show tables ");

} Else if ($ this-> adapter = "sqlite "){

Return $ this-> query ("SELECT name FROM sqlite_master WHERE type = 'table' order by name ");

}

}

}

Function hasCharsetSupport ()

{

If ($ this-> conn ){

If ($ this-> adapter = "mysql" & version_compare ($ this-> getVersion (), "4.1", "> ")){

Return true;

} Else {

Return false;

}

}

}

Function listCharset (){

If ($ this-> conn ){

If ($ this-> adapter = "mysql "){

Return $ this-> query ("show character set ");

} Else if ($ this-> adapter = "sqlite "){

Return "";

}

}

}

Function listCollation (){

If ($ this-> conn ){

If ($ this-> adapter = "mysql "){

Return $ this-> query ("show collation ");

} Else if ($ this-> adapter = "sqlite "){

Return "";

}

}

}

Function insertId (){

If ($ this-> conn ){

If ($ this-> method = "pdo "){

Return $ this-> conn-> lastInsertId ();

} Else if ($ this-> method = "mysql "){

Return @ mysql_insert_id ($ this-> conn );

} Else if ($ this-> method = "sqlite "){

Return sqlite_last_insert_rowid ($ this-conn );

}

}

}

Function escapeString ($ toEscape ){

If ($ this-> conn ){

If ($ this-> method = "pdo "){

$ ToEscape = $ this-> conn-> quote ($ toEscape );

$ ToEscape = substr ($ toEscape, 1,-1 );

Return $ toEscape;

} Else if ($ this-> adapter = "mysql "){

Return mysql_real_escape_string ($ toEscape );

} Else if ($ this-> adapter = "sqlite "){

Return sqlite_escape_string ($ toEscape );

}

}

}

Function getVersion (){

If ($ this-> conn ){

// Cache

If ($ this-> version ){

Return $ this-> version;

}

If ($ this-> adapter = "mysql "){

$ VerSql = mysql_get_server_info ();

$ Version = explode ("-", $ verSql );

$ This-> version = $ version [0];

Return $ this-> version;

} Else if ($ this-> adapter = "sqlite "){

$ This-> version = sqlite_libversion ();

Return $ this-> version;

}

}

}

// Returns the number of rows in a table

Function tableRowCount ($ table ){

If ($ this-> conn ){

If ($ this-> adapter = "mysql "){

$ CountSql = $ this-> query ("select count (*) AS 'rowcount' FROM '". $ table ."'");

$ Count = (int) ($ this-> result ($ countSql, 0, "RowCount "));

Return $ count;

} Else if ($ this-> adapter = "sqlite "){

$ CountSql = $ this-> query ("select count (*) AS 'rowcount' FROM '". $ table ."'");

$ Count = (int) ($ this-> result ($ countSql, 0, "RowCount "));

Return $ count;

}

}

}

// Gets column info for a table

Function describeTable ($ table ){

If ($ this-> conn ){

If ($ this-> adapter = "mysql "){

Return $ this-> query ("DESCRIBE '". $ table ."'");

} Else if ($ this-> adapter = "sqlite "){

$ ColumnSql = $ this-> query ("SELECT SQL FROM sqlite_master where tbl_name = '". $ table ."'");

$ ColumnInfo = $ this-> result ($ columnSql, 0, "SQL ");

$ ColumnStart = strpos ($ columnInfo ,'(');

$ Columns = substr ($ columnInfo, $ columnStart + 1,-1 );

$ Columns = split (', [^ 0-9]', $ columns );

$ ColumnList = array ();

Foreach ($ columns as $ column ){

$ Column = trim ($ column );

$ ColumnSplit = explode ("", $ column, 2 );

$ ColumnName = $ columnSplit [0];

$ ColumnType = (sizeof ($ columnSplit)> 1 )? $ ColumnSplit [1]: "";

$ ColumnList [] = array ($ columnName, $ columnType );

}

Return $ columnList;

}

}

}

/*

Return names, row counts etc for every database, table and view in a JSON string

*/

Function getMetadata (){

$ Output = '';

If ($ this-> conn ){

If ($ this-> adapter = "mysql" & version_compare ($ this-> getVersion (), "5.0.0", "> = ")){

$ This-> selectDB ("information_schema ");

$ SchemaSql = $ this-> query ("SELECT 'schema _ name' FROM 'schema' order by 'schema _ name '");

If ($ this-> rowCount ($ schemaSql )){

While ($ schema = $ this-> fetchAssoc ($ schemaSql )){

$ Output. = '{"name": "'. $ schema ['schema _ name']. '"';

// Other interesting columns: TABLE_TYPE, ENGINE, TABLE_COLUMN and more

$ TableSql = $ this-> query ("SELECT 'table _ name', 'table _ ROWS 'FROM 'tables' WHERE 'table _ scheme' = '". $ schema ['schema _ name']. "'order BY 'table _ name '");

If ($ this-> rowCount ($ tableSql )){

$ Output. = ', "items ":[';

While ($ table = $ this-> fetchAssoc ($ tableSql )){

If ($ schema ['schema _ name'] = "information_schema "){

$ CountSql = $ this-> query ("select count (*) AS 'rowcount' FROM '". $ table ['table _ name']. "'");

$ RowCount = (int) ($ this-> result ($ countSql, 0, "RowCount "));

} Else {

$ RowCount = (int) ($ table ['table _ ROWS ']);

}

$ Output. = '{"name": "'. $ table ['table _ name']. '", "rowcount":'. $ rowCount .'},';

}

If (substr ($ output,-1) = ",")

$ Output = substr ($ output, 0,-1 );

$ Output. = ']';

}

$ Output. = '},';

}

$ Output = substr ($ output, 0,-1 );

}

} Else if ($ this-> adapter = "mysql "){

$ SchemaSql = $ this-> listDatabases ();

If ($ this-> rowCount ($ schemaSql )){

While ($ schema = $ this-> fetchArray ($ schemaSql )){

$ Output. = '{"name": "'. $ schema [0]. '"';

$ This-> selectDB ($ schema [0]);

$ TableSql = $ this-> listTables ();

If ($ this-> rowCount ($ tableSql )){

$ Output. = ', "items ":[';

While ($ table = $ this-> fetchArray ($ tableSql )){

$ CountSql = $ this-> query ("select count (*) AS 'rowcount' FROM '". $ table [0]. "'");

$ RowCount = (int) ($ this-> result ($ countSql, 0, "RowCount "));

$ Output. = '{"name": "'. $ table [0]. '", "rowcount":'. $ rowCount .'},';

}

If (substr ($ output,-1) = ",")

$ Output = substr ($ output, 0,-1 );

$ Output. = ']';

}

$ Output. = '},';

}

$ Output = substr ($ output, 0,-1 );

}

} Else if ($ this-> adapter = "sqlite "){

$ Output. = '{"name": "'. $ this-> db .'"';

$ TableSql = $ this-> listTables ();

If ($ tableSql ){

$ Output. = ', "items ":[';

While ($ tableRow = $ this-> fetchArray ($ tableSql )){

$ CountSql = $ this-> query ("select count (*) AS 'rowcount' FROM '". $ tableRow [0]. "'");

$ RowCount = (int) ($ this-> result ($ countSql, 0, "RowCount "));

$ Output. = '{"name": "'. $ tableRow [0]. '", "rowcount":'. $ rowCount .'},';

}

If (substr ($ output,-1) = ",")

$ Output = substr ($ output, 0,-1 );

$ Output. = ']';

}

$ Output. = '}';

}

}

Return $ output;

}

Function error (){

Return $ this-> errorMessage;

}

}