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meekrodb/db.class.php

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<?php
/*
Copyright (C) 2008-2012 Sergey Tsalkov (stsalkov@gmail.com)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
class DB {
// initial connection
public static $dbName = '';
public static $user = '';
public static $password = '';
public static $host = 'localhost';
public static $port = null;
public static $encoding = 'latin1';
// configure workings
public static $param_char = '%';
public static $named_param_seperator = '_';
public static $success_handler = false;
public static $error_handler = true;
public static $throw_exception_on_error = false;
public static $nonsql_error_handler = null;
public static $throw_exception_on_nonsql_error = false;
public static $nested_transactions = false;
public static $usenull = true;
// internal
protected static $mdb = null;
public static function getMDB() {
$mdb = DB::$mdb;
if ($mdb === null) {
$mdb = DB::$mdb = new MeekroDB();
}
if ($mdb->param_char !== DB::$param_char) $mdb->param_char = DB::$param_char;
if ($mdb->named_param_seperator !== DB::$named_param_seperator) $mdb->named_param_seperator = DB::$named_param_seperator;
if ($mdb->success_handler !== DB::$success_handler) $mdb->success_handler = DB::$success_handler;
if ($mdb->error_handler !== DB::$error_handler) $mdb->error_handler = DB::$error_handler;
if ($mdb->throw_exception_on_error !== DB::$throw_exception_on_error) $mdb->throw_exception_on_error = DB::$throw_exception_on_error;
if ($mdb->nonsql_error_handler !== DB::$nonsql_error_handler) $mdb->nonsql_error_handler = DB::$nonsql_error_handler;
if ($mdb->throw_exception_on_nonsql_error !== DB::$throw_exception_on_nonsql_error) $mdb->throw_exception_on_nonsql_error = DB::$throw_exception_on_nonsql_error;
if ($mdb->nested_transactions !== DB::$nested_transactions) $mdb->nested_transactions = DB::$nested_transactions;
if ($mdb->usenull !== DB::$usenull) $mdb->usenull = DB::$usenull;
return $mdb;
}
public static function get() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'get'), $args); }
public static function disconnect() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'disconnect'), $args); }
public static function query() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'query'), $args); }
public static function queryFirstRow() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryFirstRow'), $args); }
public static function queryOneRow() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryOneRow'), $args); }
public static function queryAllLists() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryAllLists'), $args); }
public static function queryFullColumns() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryFullColumns'), $args); }
public static function queryFirstList() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryFirstList'), $args); }
public static function queryOneList() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryOneList'), $args); }
public static function queryFirstColumn() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryFirstColumn'), $args); }
public static function queryOneColumn() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryOneColumn'), $args); }
public static function queryFirstField() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryFirstField'), $args); }
public static function queryOneField() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryOneField'), $args); }
public static function queryRaw() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryRaw'), $args); }
public static function queryRawUnbuf() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'queryRawUnbuf'), $args); }
public static function insert() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'insert'), $args); }
public static function insertIgnore() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'insertIgnore'), $args); }
public static function insertUpdate() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'insertUpdate'), $args); }
public static function replace() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'replace'), $args); }
public static function update() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'update'), $args); }
public static function delete() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'delete'), $args); }
public static function insertId() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'insertId'), $args); }
public static function count() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'count'), $args); }
public static function affectedRows() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'affectedRows'), $args); }
public static function useDB() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'useDB'), $args); }
public static function startTransaction() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'startTransaction'), $args); }
public static function commit() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'commit'), $args); }
public static function rollback() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'rollback'), $args); }
public static function tableList() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'tableList'), $args); }
public static function columnList() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'columnList'), $args); }
public static function sqlEval() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'sqlEval'), $args); }
public static function nonSQLError() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'nonSQLError'), $args); }
public static function serverVersion() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'serverVersion'), $args); }
public static function transactionDepth() { $args = func_get_args(); return call_user_func_array(array(DB::getMDB(), 'transactionDepth'), $args); }
public static function debugMode($handler = true) {
DB::$success_handler = $handler;
}
}
class MeekroDB {
// initial connection
public $dbName = '';
public $user = '';
public $password = '';
public $host = 'localhost';
public $port = null;
public $encoding = 'latin1';
// configure workings
public $param_char = '%';
public $named_param_seperator = '_';
public $success_handler = false;
public $error_handler = true;
public $throw_exception_on_error = false;
public $nonsql_error_handler = null;
public $throw_exception_on_nonsql_error = false;
public $nested_transactions = false;
public $usenull = true;
// internal
public $internal_mysql = null;
public $server_info = null;
public $insert_id = 0;
public $num_rows = 0;
public $affected_rows = 0;
public $current_db = null;
public $nested_transactions_count = 0;
public function __construct($host=null, $user=null, $password=null, $dbName=null, $port=null, $encoding=null) {
if ($host === null) $host = DB::$host;
if ($user === null) $user = DB::$user;
if ($password === null) $password = DB::$password;
if ($dbName === null) $dbName = DB::$dbName;
if ($port === null) $port = DB::$port;
if ($encoding === null) $encoding = DB::$encoding;
$this->host = $host;
$this->user = $user;
$this->password = $password;
$this->dbName = $dbName;
$this->port = $port;
$this->encoding = $encoding;
}
public function get() {
$mysql = $this->internal_mysql;
if (!($mysql instanceof MySQLi)) {
if (! $this->port) $this->port = ini_get('mysqli.default_port');
$this->current_db = $this->dbName;
$mysql = new mysqli($this->host, $this->user, $this->password, $this->dbName, $this->port);
if ($mysql->connect_error) {
$this->nonSQLError('Unable to connect to MySQL server! Error: ' . $mysql->connect_error);
}
$mysql->set_charset($this->encoding);
$this->internal_mysql = $mysql;
$this->server_info = $mysql->server_info;
}
return $mysql;
}
public function disconnect() {
$mysqli = $this->internal_mysql;
if ($mysqli instanceof MySQLi) {
if ($thread_id = $mysqli->thread_id) $mysqli->kill($thread_id);
$mysqli->close();
}
$this->internal_mysql = null;
}
public function nonSQLError($message) {
if ($this->throw_exception_on_nonsql_error) {
$e = new MeekroDBException($message);
throw $e;
}
$error_handler = is_callable($this->nonsql_error_handler) ? $this->nonsql_error_handler : 'meekrodb_error_handler';
call_user_func($error_handler, array(
'type' => 'nonsql',
'error' => $message
));
}
public function debugMode($handler = true) {
$this->success_handler = $handler;
}
public function serverVersion() { return $this->server_info; }
public function transactionDepth() { return $this->nested_transactions_count; }
public function insertId() { return $this->insert_id; }
public function affectedRows() { return $this->affected_rows; }
public function count() { $args = func_get_args(); return call_user_func_array(array($this, 'numRows'), $args); }
public function numRows() { return $this->num_rows; }
public function useDB() { $args = func_get_args(); return call_user_func_array(array($this, 'setDB'), $args); }
public function setDB($dbName) {
$db = $this->get();
if (! $db->select_db($dbName)) $this->nonSQLError("Unable to set database to $dbName");
$this->current_db = $dbName;
}
public function startTransaction() {
if ($this->nested_transactions && $this->serverVersion() < '5.5') {
return $this->nonSQLError("Nested transactions are only available on MySQL 5.5 and greater. You are using MySQL " . $this->serverVersion());
}
if (!$this->nested_transactions || $this->nested_transactions_count == 0) {
$this->query('START TRANSACTION');
$this->nested_transactions_count = 1;
} else {
$this->query("SAVEPOINT LEVEL{$this->nested_transactions_count}");
$this->nested_transactions_count++;
}
return $this->nested_transactions_count;
}
public function commit($all=false) {
if ($this->nested_transactions && $this->serverVersion() < '5.5') {
return $this->nonSQLError("Nested transactions are only available on MySQL 5.5 and greater. You are using MySQL " . $this->serverVersion());
}
if ($this->nested_transactions && $this->nested_transactions_count > 0)
$this->nested_transactions_count--;
if (!$this->nested_transactions || $all || $this->nested_transactions_count == 0) {
$this->nested_transactions_count = 0;
$this->query('COMMIT');
} else {
$this->query("RELEASE SAVEPOINT LEVEL{$this->nested_transactions_count}");
}
return $this->nested_transactions_count;
}
public function rollback($all=false) {
if ($this->nested_transactions && $this->serverVersion() < '5.5') {
return $this->nonSQLError("Nested transactions are only available on MySQL 5.5 and greater. You are using MySQL " . $this->serverVersion());
}
if ($this->nested_transactions && $this->nested_transactions_count > 0)
$this->nested_transactions_count--;
if (!$this->nested_transactions || $all || $this->nested_transactions_count == 0) {
$this->nested_transactions_count = 0;
$this->query('ROLLBACK');
} else {
$this->query("ROLLBACK TO SAVEPOINT LEVEL{$this->nested_transactions_count}");
}
return $this->nested_transactions_count;
}
protected function formatTableName($table) {
$table = trim($table, '`');
if (strpos($table, '.')) return implode('.', array_map(array($this, 'formatTableName'), explode('.', $table)));
else return '`' . str_replace('`', '``', $table) . '`';
}
public function update() {
$args = func_get_args();
$table = array_shift($args);
$params = array_shift($args);
$where = array_shift($args);
$query = "UPDATE %b SET %? WHERE " . $where;
array_unshift($args, $params);
array_unshift($args, $table);
array_unshift($args, $query);
return call_user_func_array(array($this, 'query'), $args);
}
public function insertOrReplace($which, $table, $datas, $options=array()) {
$datas = unserialize(serialize($datas)); // break references within array
$keys = $values = array();
if (isset($datas[0]) && is_array($datas[0])) {
foreach ($datas as $datum) {
ksort($datum);
if (! $keys) $keys = array_keys($datum);
$values[] = array_values($datum);
}
} else {
$keys = array_keys($datas);
$values = array_values($datas);
}
if (isset($options['ignore']) && $options['ignore']) $which = 'INSERT IGNORE';
if (isset($options['update']) && is_array($options['update']) && $options['update'] && strtolower($which) == 'insert') {
if (array_values($options['update']) !== $options['update']) {
return $this->query("INSERT INTO %b %lb VALUES %? ON DUPLICATE KEY UPDATE %?", $table, $keys, $values, $options['update']);
} else {
$update_str = array_shift($options['update']);
$query_param = array("INSERT INTO %b %lb VALUES %? ON DUPLICATE KEY UPDATE $update_str", $table, $keys, $values);
$query_param = array_merge($query_param, $options['update']);
return call_user_func_array(array($this, 'query'), $query_param);
}
}
return $this->query("%l INTO %b %lb VALUES %?", $which, $table, $keys, $values);
}
public function insert($table, $data) { return $this->insertOrReplace('INSERT', $table, $data); }
public function insertIgnore($table, $data) { return $this->insertOrReplace('INSERT', $table, $data, array('ignore' => true)); }
public function replace($table, $data) { return $this->insertOrReplace('REPLACE', $table, $data); }
public function insertUpdate() {
$args = func_get_args();
$table = array_shift($args);
$data = array_shift($args);
if (! isset($args[0])) { // update will have all the data of the insert
if (isset($data[0]) && is_array($data[0])) { //multiple insert rows specified -- failing!
$this->nonSQLError("Badly formatted insertUpdate() query -- you didn't specify the update component!");
}
$args[0] = $data;
}
if (is_array($args[0])) $update = $args[0];
else $update = $args;
return $this->insertOrReplace('INSERT', $table, $data, array('update' => $update));
}
public function delete() {
$args = func_get_args();
$table = $this->formatTableName(array_shift($args));
$where = array_shift($args);
$buildquery = "DELETE FROM $table WHERE $where";
array_unshift($args, $buildquery);
return call_user_func_array(array($this, 'query'), $args);
}
public function sqleval() {
$args = func_get_args();
$text = call_user_func_array(array($this, 'parseQueryParams'), $args);
return new MeekroDBEval($text);
}
public function columnList($table) {
return $this->queryOneColumn('Field', "SHOW COLUMNS FROM $table");
}
public function tableList($db = null) {
if ($db) {
$olddb = $this->current_db;
$this->useDB($db);
}
$result = $this->queryFirstColumn('SHOW TABLES');
if (isset($olddb)) $this->useDB($olddb);
return $result;
}
protected function preparseQueryParams() {
$args = func_get_args();
$sql = trim(strval(array_shift($args)));
$args_all = $args;
if (count($args_all) == 0) return array($sql);
$param_char_length = strlen($this->param_char);
$named_seperator_length = strlen($this->named_param_seperator);
$types = array(
$this->param_char . 'll', // list of literals
$this->param_char . 'ls', // list of strings
$this->param_char . 'l', // literal
$this->param_char . 'li', // list of integers
$this->param_char . 'ld', // list of decimals
$this->param_char . 'lb', // list of backticks
$this->param_char . 'lt', // list of timestamps
$this->param_char . 's', // string
$this->param_char . 'i', // integer
$this->param_char . 'd', // double / decimal
$this->param_char . 'b', // backtick
$this->param_char . 't', // timestamp
$this->param_char . '?', // infer type
$this->param_char . 'ss' // search string (like string, surrounded with %'s)
);
// generate list of all MeekroDB variables in our query, and their position
// in the form "offset => variable", sorted by offsets
$posList = array();
foreach ($types as $type) {
$lastPos = 0;
while (($pos = strpos($sql, $type, $lastPos)) !== false) {
$lastPos = $pos + 1;
if (isset($posList[$pos]) && strlen($posList[$pos]) > strlen($type)) continue;
$posList[$pos] = $type;
}
}
ksort($posList);
// for each MeekroDB variable, substitute it with array(type: i, value: 53) or whatever
$chunkyQuery = array(); // preparsed query
$pos_adj = 0; // how much we've added or removed from the original sql string
foreach ($posList as $pos => $type) {
$type = substr($type, $param_char_length); // variable, without % in front of it
$length_type = strlen($type) + $param_char_length; // length of variable w/o %
$new_pos = $pos + $pos_adj; // position of start of variable
$new_pos_back = $new_pos + $length_type; // position of end of variable
$arg_number_length = 0; // length of any named or numbered parameter addition
// handle numbered parameters
if ($arg_number_length = strspn($sql, '0123456789', $new_pos_back)) {
$arg_number = substr($sql, $new_pos_back, $arg_number_length);
if (! array_key_exists($arg_number, $args_all)) $this->nonSQLError("Non existent argument reference (arg $arg_number): $sql");
$arg = $args_all[$arg_number];
// handle named parameters
} else if (substr($sql, $new_pos_back, $named_seperator_length) == $this->named_param_seperator) {
$arg_number_length = strspn($sql, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_',
$new_pos_back + $named_seperator_length) + $named_seperator_length;
$arg_number = substr($sql, $new_pos_back + $named_seperator_length, $arg_number_length - $named_seperator_length);
if (count($args_all) != 1 || !is_array($args_all[0])) $this->nonSQLError("If you use named parameters, the second argument must be an array of parameters");
if (! array_key_exists($arg_number, $args_all[0])) $this->nonSQLError("Non existent argument reference (arg $arg_number): $sql");
$arg = $args_all[0][$arg_number];
} else {
$arg_number = 0;
$arg = array_shift($args);
}
if ($new_pos > 0) $chunkyQuery[] = substr($sql, 0, $new_pos);
if (is_object($arg) && ($arg instanceof WhereClause)) {
list($clause_sql, $clause_args) = $arg->textAndArgs();
array_unshift($clause_args, $clause_sql);
$preparsed_sql = call_user_func_array(array($this, 'preparseQueryParams'), $clause_args);
$chunkyQuery = array_merge($chunkyQuery, $preparsed_sql);
} else {
$chunkyQuery[] = array('type' => $type, 'value' => $arg);
}
$sql = substr($sql, $new_pos_back + $arg_number_length);
$pos_adj -= $new_pos_back + $arg_number_length;
}
if (strlen($sql) > 0) $chunkyQuery[] = $sql;
return $chunkyQuery;
}
protected function escape($str) { return "'" . $this->get()->real_escape_string(strval($str)) . "'"; }
protected function sanitize($value) {
if (is_object($value)) {
if ($value instanceof MeekroDBEval) return $value->text;
else if ($value instanceof DateTime) return $this->escape($value->format('Y-m-d H:i:s'));
else return '';
}
if (is_null($value)) return $this->usenull ? 'NULL' : "''";
else if (is_bool($value)) return ($value ? 1 : 0);
else if (is_int($value)) return $value;
else if (is_float($value)) return $value;
else if (is_array($value)) {
// non-assoc array?
if (array_values($value) === $value) {
if (is_array($value[0])) return implode(', ', array_map(array($this, 'sanitize'), $value));
else return '(' . implode(', ', array_map(array($this, 'sanitize'), $value)) . ')';
}
$pairs = array();
foreach ($value as $k => $v) {
$pairs[] = $this->formatTableName($k) . '=' . $this->sanitize($v);
}
return implode(', ', $pairs);
}
else return $this->escape($value);
}
protected function parseTS($ts) {
if (is_string($ts)) return date('Y-m-d H:i:s', strtotime($ts));
else if (is_object($ts) && ($ts instanceof DateTime)) return $ts->format('Y-m-d H:i:s');
}
protected function parseQueryParams() {
$args = func_get_args();
$chunkyQuery = call_user_func_array(array($this, 'preparseQueryParams'), $args);
$query = '';
$array_types = array('ls', 'li', 'ld', 'lb', 'll', 'lt');
foreach ($chunkyQuery as $chunk) {
if (is_string($chunk)) {
$query .= $chunk;
continue;
}
$type = $chunk['type'];
$arg = $chunk['value'];
$result = '';
if ($type != '?') {
$is_array_type = in_array($type, $array_types, true);
if ($is_array_type && !is_array($arg)) $this->nonSQLError("Badly formatted SQL query: Expected array, got scalar instead!");
else if (!$is_array_type && is_array($arg)) $this->nonSQLError("Badly formatted SQL query: Expected scalar, got array instead!");
}
if ($type == 's') $result = $this->escape($arg);
else if ($type == 'i') $result = intval($arg);
else if ($type == 'd') $result = doubleval($arg);
else if ($type == 'b') $result = $this->formatTableName($arg);
else if ($type == 'l') $result = $arg;
else if ($type == 'ss') $result = "%" . $this->escape(str_replace(array('%', '_'), array('\%', '\_'), $arg)) . "%";
else if ($type == 't') $result = $this->escape($this->parseTS($arg));
else if ($type == 'ls') $result = array_map(array($this, 'escape'), $arg);
else if ($type == 'li') $result = array_map('intval', $arg);
else if ($type == 'ld') $result = array_map('doubleval', $arg);
else if ($type == 'lb') $result = array_map(array($this, 'formatTableName'), $arg);
else if ($type == 'll') $result = $arg;
else if ($type == 'lt') $result = array_map(array($this, 'escape'), array_map(array($this, 'parseTS'), $arg));
else if ($type == '?') $result = $this->sanitize($arg);
else $this->nonSQLError("Badly formatted SQL query: Invalid MeekroDB param $type");
if (is_array($result)) $result = '(' . implode(',', $result) . ')';
$query .= $result;
}
return $query;
}
protected function prependCall($function, $args, $prepend) { array_unshift($args, $prepend); return call_user_func_array($function, $args); }
public function query() { $args = func_get_args(); return $this->prependCall(array($this, 'queryHelper'), $args, 'assoc'); }
public function queryAllLists() { $args = func_get_args(); return $this->prependCall(array($this, 'queryHelper'), $args, 'list'); }
public function queryFullColumns() { $args = func_get_args(); return $this->prependCall(array($this, 'queryHelper'), $args, 'full'); }
public function queryRaw() { $args = func_get_args(); return $this->prependCall(array($this, 'queryHelper'), $args, 'raw_buf'); }
public function queryRawUnbuf() { $args = func_get_args(); return $this->prependCall(array($this, 'queryHelper'), $args, 'raw_unbuf'); }
protected function queryHelper() {
$args = func_get_args();
$type = array_shift($args);
$db = $this->get();
$is_buffered = true;
$row_type = 'assoc'; // assoc, list, raw
$full_names = false;
switch ($type) {
case 'assoc':
break;
case 'list':
$row_type = 'list';
break;
case 'full':
$row_type = 'list';
$full_names = true;
break;
case 'raw_buf':
$row_type = 'raw';
break;
case 'raw_unbuf':
$is_buffered = false;
$row_type = 'raw';
break;
default:
$this->nonSQLError('Error -- invalid argument to queryHelper!');
}
$sql = call_user_func_array(array($this, 'parseQueryParams'), $args);
if ($this->success_handler) $starttime = microtime(true);
$result = $db->query($sql, $is_buffered ? MYSQLI_STORE_RESULT : MYSQLI_USE_RESULT);
if ($this->success_handler) $runtime = microtime(true) - $starttime;
else $runtime = 0;
// ----- BEGIN ERROR HANDLING
if (!$sql || $db->error) {
if ($this->error_handler) {
$error_handler = is_callable($this->error_handler) ? $this->error_handler : 'meekrodb_error_handler';
call_user_func($error_handler, array(
'type' => 'sql',
'query' => $sql,
'error' => $db->error
));
}
if ($this->throw_exception_on_error) {
$e = new MeekroDBException($db->error, $sql);
throw $e;
}
} else if ($this->success_handler) {
$runtime = sprintf('%f', $runtime * 1000);
$success_handler = is_callable($this->success_handler) ? $this->success_handler : 'meekrodb_debugmode_handler';
call_user_func($success_handler, array(
'query' => $sql,
'runtime' => $runtime,
'affected' => $db->affected_rows
));
}
// ----- END ERROR HANDLING
$this->insert_id = $db->insert_id;
$this->affected_rows = $db->affected_rows;
// mysqli_result->num_rows won't initially show correct results for unbuffered data
if ($is_buffered && ($result instanceof MySQLi_Result)) $this->num_rows = $result->num_rows;
else $this->num_rows = null;
if ($row_type == 'raw' || !($result instanceof MySQLi_Result)) return $result;
$return = array();
if ($full_names) {
$infos = array();
foreach ($result->fetch_fields() as $info) {
if (strlen($info->table)) $infos[] = $info->table . '.' . $info->name;
else $infos[] = $info->name;
}
}
while ($row = ($row_type == 'assoc' ? $result->fetch_assoc() : $result->fetch_row())) {
if ($full_names) $row = array_combine($infos, $row);
$return[] = $row;
}
// free results
$result->free();
while ($db->more_results()) {
$db->next_result();
if ($result = $db->use_result()) $result->free();
}
return $return;
}
public function queryOneRow() { $args = func_get_args(); return call_user_func_array(array($this, 'queryFirstRow'), $args); }
public function queryFirstRow() {
$args = func_get_args();
$result = call_user_func_array(array($this, 'query'), $args);
if (! $result) return null;
return reset($result);
}
public function queryOneList() { $args = func_get_args(); return call_user_func_array(array($this, 'queryFirstList'), $args); }
public function queryFirstList() {
$args = func_get_args();
$result = call_user_func_array(array($this, 'queryAllLists'), $args);
if (! $result) return null;
return reset($result);
}
public function queryFirstColumn() {
$args = func_get_args();
$results = call_user_func_array(array($this, 'queryAllLists'), $args);
$ret = array();
if (!count($results) || !count($results[0])) return $ret;
foreach ($results as $row) {
$ret[] = $row[0];
}
return $ret;
}
public function queryOneColumn() {
$args = func_get_args();
$column = array_shift($args);
$results = call_user_func_array(array($this, 'query'), $args);
$ret = array();
if (!count($results) || !count($results[0])) return $ret;
if ($column === null) {
$keys = array_keys($results[0]);
$column = $keys[0];
}
foreach ($results as $row) {
$ret[] = $row[$column];
}
return $ret;
}
public function queryFirstField() {
$args = func_get_args();
$row = call_user_func_array(array($this, 'queryFirstList'), $args);
if ($row == null) return null;
return $row[0];
}
public function queryOneField() {
$args = func_get_args();
$column = array_shift($args);
$row = call_user_func_array(array($this, 'queryOneRow'), $args);
if ($row == null) {
return null;
} else if ($column === null) {
$keys = array_keys($row);
$column = $keys[0];
}
return $row[$column];
}
}
class WhereClause {
public $type = 'and'; //AND or OR
public $negate = false;
public $clauses = array();
function __construct($type) {
$type = strtolower($type);
if ($type !== 'or' && $type !== 'and') DB::nonSQLError('you must use either WhereClause(and) or WhereClause(or)');
$this->type = $type;
}
function add() {
$args = func_get_args();
$sql = array_shift($args);
if ($sql instanceof WhereClause) {
$this->clauses[] = $sql;
} else {
$this->clauses[] = array('sql' => $sql, 'args' => $args);
}
}
function negateLast() {
$i = count($this->clauses) - 1;
if (!isset($this->clauses[$i])) return;
if ($this->clauses[$i] instanceof WhereClause) {
$this->clauses[$i]->negate();
} else {
$this->clauses[$i]['sql'] = 'NOT (' . $this->clauses[$i]['sql'] . ')';
}
}
function negate() {
$this->negate = ! $this->negate;
}
function addClause($type) {
$r = new WhereClause($type);
$this->add($r);
return $r;
}
function count() {
return count($this->clauses);
}
function textAndArgs() {
$sql = '';
$args = array();
if (count($this->clauses) == 0) return array('(1)', $args);
$sql = array();
foreach ($this->clauses as $clause) {
if ($clause instanceof WhereClause) {
list($clause_sql, $clause_args) = $clause->textAndArgs();
} else {
$clause_sql = $clause['sql'];
$clause_args = $clause['args'];
}
$sql[] = "($clause_sql)";
$args = array_merge($args, $clause_args);
}
$sql = array_unique($sql);
if ($this->type == 'and') $sql = implode(' AND ', $sql);
else $sql = implode(' OR ', $sql);
if ($this->negate) $sql = '(NOT ' . $sql . ')';
return array($sql, $args);
}
// backwards compatability
// we now return full WhereClause object here and evaluate it in preparseQueryParams
function text() { return $this; }
function __toString() { return $this->text(); }
}
class DBTransaction {
private $committed = false;
function __construct() {
DB::startTransaction();
}
function __destruct() {
if (! $this->committed) DB::rollback();
}
function commit() {
DB::commit();
$this->committed = true;
}
}
class MeekroDBException extends Exception {
protected $query = '';
function __construct($message='', $query='') {
parent::__construct($message);
$this->query = $query;
}
public function getQuery() { return $this->query; }
}
class DBHelper {
/*
verticalSlice
1. For an array of assoc rays, return an array of values for a particular key
2. if $keyfield is given, same as above but use that hash key as the key in new array
*/
public static function verticalSlice($array, $field, $keyfield = null) {
$array = (array) $array;
$R = array();
foreach ($array as $obj) {
if (! array_key_exists($field, $obj)) die("verticalSlice: array doesn't have requested field\n");
if ($keyfield) {
if (! array_key_exists($keyfield, $obj)) die("verticalSlice: array doesn't have requested field\n");
$R[$obj[$keyfield]] = $obj[$field];
} else {
$R[] = $obj[$field];
}
}
return $R;
}
/*
reIndex
For an array of assoc rays, return a new array of assoc rays using a certain field for keys
*/
public static function reIndex() {
$fields = func_get_args();
$array = array_shift($fields);
$array = (array) $array;
$R = array();
foreach ($array as $obj) {
$target =& $R;
foreach ($fields as $field) {
if (! array_key_exists($field, $obj)) die("reIndex: array doesn't have requested field\n");
$nextkey = $obj[$field];
$target =& $target[$nextkey];
}
$target = $obj;
}
return $R;
}
}
function meekrodb_error_handler($params) {
if (isset($params['query'])) $out[] = "QUERY: " . $params['query'];
if (isset($params['error'])) $out[] = "ERROR: " . $params['error'];
$out[] = "";
if (php_sapi_name() == 'cli' && empty($_SERVER['REMOTE_ADDR'])) {
echo implode("\n", $out);
} else {
echo implode("<br>\n", $out);
}
die;
}
function meekrodb_debugmode_handler($params) {
echo "QUERY: " . $params['query'] . " [" . $params['runtime'] . " ms]";
if (php_sapi_name() == 'cli' && empty($_SERVER['REMOTE_ADDR'])) {
echo "\n";
} else {
echo "<br>\n";
}
}
class MeekroDBEval {
public $text = '';
function __construct($text) {
$this->text = $text;
}
}
?>
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