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MysqliDb.php
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MysqliDb.php
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<?php
/**
* MysqliDb Class
*
* @category Database Access
* @package MysqliDb
* @author Jeffery Way <jeffrey@jeffrey-way.com>
* @author Josh Campbell <jcampbell@ajillion.com>
* @author Alexander V. Butenko <a.butenka@gmail.com>
* @copyright Copyright (c) 2010-2016
* @license http://opensource.org/licenses/gpl-3.0.html GNU Public License
* @link http://github.com/joshcam/PHP-MySQLi-Database-Class
* @version 2.8-master
*/
class MysqliDb
{
/**
* Static instance of self
* @var MysqliDb
*/
protected static $_instance;
/**
* Table prefix
* @var string
*/
public static $prefix = '';
/**
* MySQLi instance
* @var mysqli
*/
protected $_mysqli;
/**
* The SQL query to be prepared and executed
* @var string
*/
protected $_query;
/**
* The previously executed SQL query
* @var string
*/
protected $_lastQuery;
/**
* The SQL query options required after SELECT, INSERT, UPDATE or DELETE
* @var string
*/
protected $_queryOptions = array();
/**
* An array that holds where joins
* @var array
*/
protected $_join = array();
/**
* An array that holds where conditions
* @var array
*/
protected $_where = array();
/**
* An array that holds where join ands
*
* @var array
*/
protected $_joinAnd = array();
/**
* An array that holds having conditions
* @var array
*/
protected $_having = array();
/**
* Dynamic type list for order by condition value
* @var array
*/
protected $_orderBy = array();
/**
* Dynamic type list for group by condition value
* @var array
*/
protected $_groupBy = array();
/**
* Dynamic type list for tempromary locking tables.
* @var array
*/
protected $_tableLocks = array();
/**
* Variable which holds the current table lock method.
* @var string
*/
protected $_tableLockMethod = "READ";
/**
* Dynamic array that holds a combination of where condition/table data value types and parameter references
* @var array
*/
protected $_bindParams = array(''); // Create the empty 0 index
/**
* Variable which holds an amount of returned rows during get/getOne/select queries
* @var string
*/
public $count = 0;
/**
* Variable which holds an amount of returned rows during get/getOne/select queries with withTotalCount()
* @var string
*/
public $totalCount = 0;
/**
* Variable which holds last statement error
* @var string
*/
protected $_stmtError;
/**
* Variable which holds last statement error code
* @var int
*/
protected $_stmtErrno;
/**
* Database credentials
* @var string
*/
protected $host;
protected $_username;
protected $_password;
protected $db;
protected $port;
protected $charset;
/**
* Is Subquery object
* @var bool
*/
protected $isSubQuery = false;
/**
* Name of the auto increment column
* @var int
*/
protected $_lastInsertId = null;
/**
* Column names for update when using onDuplicate method
* @var array
*/
protected $_updateColumns = null;
/**
* Return type: 'array' to return results as array, 'object' as object
* 'json' as json string
* @var string
*/
public $returnType = 'array';
/**
* Should join() results be nested by table
* @var bool
*/
protected $_nestJoin = false;
/**
* Table name (with prefix, if used)
* @var string
*/
private $_tableName = '';
/**
* FOR UPDATE flag
* @var bool
*/
protected $_forUpdate = false;
/**
* LOCK IN SHARE MODE flag
* @var bool
*/
protected $_lockInShareMode = false;
/**
* Key field for Map()'ed result array
* @var string
*/
protected $_mapKey = null;
/**
* Variables for query execution tracing
*/
protected $traceStartQ;
protected $traceEnabled;
protected $traceStripPrefix;
public $trace = array();
/**
* Per page limit for pagination
*
* @var int
*/
public $pageLimit = 20;
/**
* Variable that holds total pages count of last paginate() query
*
* @var int
*/
public $totalPages = 0;
/**
* @param string $host
* @param string $username
* @param string $password
* @param string $db
* @param int $port
* @param string $charset
*/
public function __construct($host = null, $username = null, $password = null, $db = null, $port = null, $charset = 'utf8')
{
$isSubQuery = false;
// if params were passed as array
if (is_array($host)) {
foreach ($host as $key => $val) {
$$key = $val;
}
}
// if host were set as mysqli socket
if (is_object($host)) {
$this->_mysqli = $host;
} else {
$this->host = $host;
}
$this->_username = $username;
$this->_password = $password;
$this->db = $db;
$this->port = $port;
$this->charset = $charset;
if ($isSubQuery) {
$this->isSubQuery = true;
return;
}
if (isset($prefix)) {
$this->setPrefix($prefix);
}
self::$_instance = $this;
}
/**
* A method to connect to the database
*
* @throws Exception
* @return void
*/
public function connect()
{
if ($this->isSubQuery) {
return;
}
if (empty($this->host)) {
throw new Exception('MySQL host is not set');
}
$this->_mysqli = new mysqli($this->host, $this->_username, $this->_password, $this->db, $this->port);
if ($this->_mysqli->connect_error) {
throw new Exception('Connect Error ' . $this->_mysqli->connect_errno . ': ' . $this->_mysqli->connect_error, $this->_mysqli->connect_errno);
}
if ($this->charset) {
$this->_mysqli->set_charset($this->charset);
}
}
/**
* A method to get mysqli object or create it in case needed
*
* @return mysqli
*/
public function mysqli()
{
if (!$this->_mysqli) {
$this->connect();
}
return $this->_mysqli;
}
/**
* A method of returning the static instance to allow access to the
* instantiated object from within another class.
* Inheriting this class would require reloading connection info.
*
* @uses $db = MySqliDb::getInstance();
*
* @return MysqliDb Returns the current instance.
*/
public static function getInstance()
{
return self::$_instance;
}
/**
* Reset states after an execution
*
* @return MysqliDb Returns the current instance.
*/
protected function reset()
{
if ($this->traceEnabled) {
$this->trace[] = array($this->_lastQuery, (microtime(true) - $this->traceStartQ), $this->_traceGetCaller());
}
$this->_where = array();
$this->_having = array();
$this->_join = array();
$this->_joinAnd = array();
$this->_orderBy = array();
$this->_groupBy = array();
$this->_bindParams = array(''); // Create the empty 0 index
$this->_query = null;
$this->_queryOptions = array();
$this->returnType = 'array';
$this->_nestJoin = false;
$this->_forUpdate = false;
$this->_lockInShareMode = false;
$this->_tableName = '';
$this->_lastInsertId = null;
$this->_updateColumns = null;
$this->_mapKey = null;
}
/**
* Helper function to create dbObject with JSON return type
*
* @return MysqliDb
*/
public function jsonBuilder()
{
$this->returnType = 'json';
return $this;
}
/**
* Helper function to create dbObject with array return type
* Added for consistency as thats default output type
*
* @return MysqliDb
*/
public function arrayBuilder()
{
$this->returnType = 'array';
return $this;
}
/**
* Helper function to create dbObject with object return type.
*
* @return MysqliDb
*/
public function objectBuilder()
{
$this->returnType = 'object';
return $this;
}
/**
* Method to set a prefix
*
* @param string $prefix Contains a tableprefix
*
* @return MysqliDb
*/
public function setPrefix($prefix = '')
{
self::$prefix = $prefix;
return $this;
}
/**
* Pushes a unprepared statement to the mysqli stack.
* WARNING: Use with caution.
* This method does not escape strings by default so make sure you'll never use it in production.
*
* @author Jonas Barascu
* @param [[Type]] $query [[Description]]
*/
private function queryUnprepared($query)
{
// Execute query
$stmt = $this->mysqli()->query($query);
// Failed?
if(!$stmt){
throw new Exception("Unprepared Query Failed, ERRNO: ".$this->mysqli()->errno." (".$this->mysqli()->error.")", $this->mysqli()->errno);
};
// return stmt for future use
return $stmt;
}
/**
* Execute raw SQL query.
*
* @param string $query User-provided query to execute.
* @param array $bindParams Variables array to bind to the SQL statement.
*
* @return array Contains the returned rows from the query.
*/
public function rawQuery($query, $bindParams = null)
{
$params = array(''); // Create the empty 0 index
$this->_query = $query;
$stmt = $this->_prepareQuery();
if (is_array($bindParams) === true) {
foreach ($bindParams as $prop => $val) {
$params[0] .= $this->_determineType($val);
array_push($params, $bindParams[$prop]);
}
call_user_func_array(array($stmt, 'bind_param'), $this->refValues($params));
}
$stmt->execute();
$this->count = $stmt->affected_rows;
$this->_stmtError = $stmt->error;
$this->_stmtErrno = $stmt->errno;
$this->_lastQuery = $this->replacePlaceHolders($this->_query, $params);
$res = $this->_dynamicBindResults($stmt);
$this->reset();
return $res;
}
/**
* Helper function to execute raw SQL query and return only 1 row of results.
* Note that function do not add 'limit 1' to the query by itself
* Same idea as getOne()
*
* @param string $query User-provided query to execute.
* @param array $bindParams Variables array to bind to the SQL statement.
*
* @return array|null Contains the returned row from the query.
*/
public function rawQueryOne($query, $bindParams = null)
{
$res = $this->rawQuery($query, $bindParams);
if (is_array($res) && isset($res[0])) {
return $res[0];
}
return null;
}
/**
* Helper function to execute raw SQL query and return only 1 column of results.
* If 'limit 1' will be found, then string will be returned instead of array
* Same idea as getValue()
*
* @param string $query User-provided query to execute.
* @param array $bindParams Variables array to bind to the SQL statement.
*
* @return mixed Contains the returned rows from the query.
*/
public function rawQueryValue($query, $bindParams = null)
{
$res = $this->rawQuery($query, $bindParams);
if (!$res) {
return null;
}
$limit = preg_match('/limit\s+1;?$/i', $query);
$key = key($res[0]);
if (isset($res[0][$key]) && $limit == true) {
return $res[0][$key];
}
$newRes = Array();
for ($i = 0; $i < $this->count; $i++) {
$newRes[] = $res[$i][$key];
}
return $newRes;
}
/**
* A method to perform select query
*
* @param string $query Contains a user-provided select query.
* @param int|array $numRows Array to define SQL limit in format Array ($count, $offset)
*
* @return array Contains the returned rows from the query.
*/
public function query($query, $numRows = null)
{
$this->_query = $query;
$stmt = $this->_buildQuery($numRows);
$stmt->execute();
$this->_stmtError = $stmt->error;
$this->_stmtErrno = $stmt->errno;
$res = $this->_dynamicBindResults($stmt);
$this->reset();
return $res;
}
/**
* This method allows you to specify multiple (method chaining optional) options for SQL queries.
*
* @uses $MySqliDb->setQueryOption('name');
*
* @param string|array $options The optons name of the query.
*
* @throws Exception
* @return MysqliDb
*/
public function setQueryOption($options)
{
$allowedOptions = Array('ALL', 'DISTINCT', 'DISTINCTROW', 'HIGH_PRIORITY', 'STRAIGHT_JOIN', 'SQL_SMALL_RESULT',
'SQL_BIG_RESULT', 'SQL_BUFFER_RESULT', 'SQL_CACHE', 'SQL_NO_CACHE', 'SQL_CALC_FOUND_ROWS',
'LOW_PRIORITY', 'IGNORE', 'QUICK', 'MYSQLI_NESTJOIN', 'FOR UPDATE', 'LOCK IN SHARE MODE');
if (!is_array($options)) {
$options = Array($options);
}
foreach ($options as $option) {
$option = strtoupper($option);
if (!in_array($option, $allowedOptions)) {
throw new Exception('Wrong query option: ' . $option);
}
if ($option == 'MYSQLI_NESTJOIN') {
$this->_nestJoin = true;
} elseif ($option == 'FOR UPDATE') {
$this->_forUpdate = true;
} elseif ($option == 'LOCK IN SHARE MODE') {
$this->_lockInShareMode = true;
} else {
$this->_queryOptions[] = $option;
}
}
return $this;
}
/**
* Function to enable SQL_CALC_FOUND_ROWS in the get queries
*
* @return MysqliDb
*/
public function withTotalCount()
{
$this->setQueryOption('SQL_CALC_FOUND_ROWS');
return $this;
}
/**
* A convenient SELECT * function.
*
* @param string $tableName The name of the database table to work with.
* @param int|array $numRows Array to define SQL limit in format Array ($count, $offset)
* or only $count
* @param string $columns Desired columns
*
* @return array Contains the returned rows from the select query.
*/
public function get($tableName, $numRows = null, $columns = '*')
{
if (empty($columns)) {
$columns = '*';
}
$column = is_array($columns) ? implode(', ', $columns) : $columns;
if (strpos($tableName, '.') === false) {
$this->_tableName = self::$prefix . $tableName;
} else {
$this->_tableName = $tableName;
}
$this->_query = 'SELECT ' . implode(' ', $this->_queryOptions) . ' ' .
$column . " FROM " . $this->_tableName;
$stmt = $this->_buildQuery($numRows);
if ($this->isSubQuery) {
return $this;
}
$stmt->execute();
$this->_stmtError = $stmt->error;
$this->_stmtErrno = $stmt->errno;
$res = $this->_dynamicBindResults($stmt);
$this->reset();
return $res;
}
/**
* A convenient SELECT * function to get one record.
*
* @param string $tableName The name of the database table to work with.
* @param string $columns Desired columns
*
* @return array Contains the returned rows from the select query.
*/
public function getOne($tableName, $columns = '*')
{
$res = $this->get($tableName, 1, $columns);
if ($res instanceof MysqliDb) {
return $res;
} elseif (is_array($res) && isset($res[0])) {
return $res[0];
} elseif ($res) {
return $res;
}
return null;
}
/**
* A convenient SELECT COLUMN function to get a single column value from one row
*
* @param string $tableName The name of the database table to work with.
* @param string $column The desired column
* @param int $limit Limit of rows to select. Use null for unlimited..1 by default
*
* @return mixed Contains the value of a returned column / array of values
*/
public function getValue($tableName, $column, $limit = 1)
{
$res = $this->ArrayBuilder()->get($tableName, $limit, "{$column} AS retval");
if (!$res) {
return null;
}
if ($limit == 1) {
if (isset($res[0]["retval"])) {
return $res[0]["retval"];
}
return null;
}
$newRes = Array();
for ($i = 0; $i < $this->count; $i++) {
$newRes[] = $res[$i]['retval'];
}
return $newRes;
}
/**
* Insert method to add new row
*
* @param string $tableName The name of the table.
* @param array $insertData Data containing information for inserting into the DB.
*
* @return bool Boolean indicating whether the insert query was completed succesfully.
*/
public function insert($tableName, $insertData)
{
return $this->_buildInsert($tableName, $insertData, 'INSERT');
}
/**
* Insert method to add several rows at once
*
* @param string $tableName The name of the table.
* @param array $multiInsertData Two-dimensinal Data-array containing information for inserting into the DB.
* @param array $dataKeys Optinal Table Key names, if not set in insertDataSet.
*
* @return bool|array Boolean indicating the insertion failed (false), else return id-array ([int])
*/
public function insertMulti($tableName, array $multiInsertData, array $dataKeys = null)
{
// only auto-commit our inserts, if no transaction is currently running
$autoCommit = (isset($this->_transaction_in_progress) ? !$this->_transaction_in_progress : true);
$ids = array();
if($autoCommit) {
$this->startTransaction();
}
foreach ($multiInsertData as $insertData) {
if($dataKeys !== null) {
// apply column-names if given, else assume they're already given in the data
$insertData = array_combine($dataKeys, $insertData);
}
$id = $this->insert($tableName, $insertData);
if(!$id) {
if($autoCommit) {
$this->rollback();
}
return false;
}
$ids[] = $id;
}
if($autoCommit) {
$this->commit();
}
return $ids;
}
/**
* Replace method to add new row
*
* @param string $tableName The name of the table.
* @param array $insertData Data containing information for inserting into the DB.
*
* @return bool Boolean indicating whether the insert query was completed succesfully.
*/
public function replace($tableName, $insertData)
{
return $this->_buildInsert($tableName, $insertData, 'REPLACE');
}
/**
* A convenient function that returns TRUE if exists at least an element that
* satisfy the where condition specified calling the "where" method before this one.
*
* @param string $tableName The name of the database table to work with.
*
* @return array Contains the returned rows from the select query.
*/
public function has($tableName)
{
$this->getOne($tableName, '1');
return $this->count >= 1;
}
/**
* Update query. Be sure to first call the "where" method.
*
* @param string $tableName The name of the database table to work with.
* @param array $tableData Array of data to update the desired row.
* @param int $numRows Limit on the number of rows that can be updated.
*
* @return bool
*/
public function update($tableName, $tableData, $numRows = null)
{
if ($this->isSubQuery) {
return;
}
$this->_query = "UPDATE " . self::$prefix . $tableName;
$stmt = $this->_buildQuery($numRows, $tableData);
$status = $stmt->execute();
$this->reset();
$this->_stmtError = $stmt->error;
$this->_stmtErrno = $stmt->errno;
$this->count = $stmt->affected_rows;
return $status;
}
/**
* Delete query. Call the "where" method first.
*
* @param string $tableName The name of the database table to work with.
* @param int|array $numRows Array to define SQL limit in format Array ($count, $offset)
* or only $count
*
* @return bool Indicates success. 0 or 1.
*/
public function delete($tableName, $numRows = null)
{
if ($this->isSubQuery) {
return;
}
$table = self::$prefix . $tableName;
if (count($this->_join)) {
$this->_query = "DELETE " . preg_replace('/.* (.*)/', '$1', $table) . " FROM " . $table;
} else {
$this->_query = "DELETE FROM " . $table;
}
$stmt = $this->_buildQuery($numRows);
$stmt->execute();
$this->_stmtError = $stmt->error;
$this->_stmtErrno = $stmt->errno;
$this->reset();
return ($stmt->affected_rows > -1); // affected_rows returns 0 if nothing matched where statement, or required updating, -1 if error
}
/**
* This method allows you to specify multiple (method chaining optional) AND WHERE statements for SQL queries.
*
* @uses $MySqliDb->where('id', 7)->where('title', 'MyTitle');
*
* @param string $whereProp The name of the database field.
* @param mixed $whereValue The value of the database field.
* @param string $operator Comparison operator. Default is =
* @param string $cond Condition of where statement (OR, AND)
*
* @return MysqliDb
*/
public function where($whereProp, $whereValue = 'DBNULL', $operator = '=', $cond = 'AND')
{
// forkaround for an old operation api
if (is_array($whereValue) && ($key = key($whereValue)) != "0") {
$operator = $key;
$whereValue = $whereValue[$key];
}
if (count($this->_where) == 0) {
$cond = '';
}
$this->_where[] = array($cond, $whereProp, $operator, $whereValue);
return $this;
}
/**
* This function store update column's name and column name of the
* autoincrement column
*
* @param array $updateColumns Variable with values
* @param string $lastInsertId Variable value
*
* @return MysqliDb
*/
public function onDuplicate($updateColumns, $lastInsertId = null)
{
$this->_lastInsertId = $lastInsertId;
$this->_updateColumns = $updateColumns;
return $this;
}
/**
* This method allows you to specify multiple (method chaining optional) OR WHERE statements for SQL queries.
*
* @uses $MySqliDb->orWhere('id', 7)->orWhere('title', 'MyTitle');
*
* @param string $whereProp The name of the database field.
* @param mixed $whereValue The value of the database field.
* @param string $operator Comparison operator. Default is =
*
* @return MysqliDb
*/
public function orWhere($whereProp, $whereValue = 'DBNULL', $operator = '=')
{
return $this->where($whereProp, $whereValue, $operator, 'OR');
}
/**
* This method allows you to specify multiple (method chaining optional) AND HAVING statements for SQL queries.
*
* @uses $MySqliDb->having('SUM(tags) > 10')
*
* @param string $havingProp The name of the database field.
* @param mixed $havingValue The value of the database field.
* @param string $operator Comparison operator. Default is =
*
* @return MysqliDb
*/
public function having($havingProp, $havingValue = 'DBNULL', $operator = '=', $cond = 'AND')
{
// forkaround for an old operation api
if (is_array($havingValue) && ($key = key($havingValue)) != "0") {
$operator = $key;
$havingValue = $havingValue[$key];
}
if (count($this->_having) == 0) {
$cond = '';
}
$this->_having[] = array($cond, $havingProp, $operator, $havingValue);
return $this;
}
/**
* This method allows you to specify multiple (method chaining optional) OR HAVING statements for SQL queries.
*
* @uses $MySqliDb->orHaving('SUM(tags) > 10')
*
* @param string $havingProp The name of the database field.
* @param mixed $havingValue The value of the database field.
* @param string $operator Comparison operator. Default is =
*
* @return MysqliDb
*/
public function orHaving($havingProp, $havingValue = null, $operator = null)
{
return $this->having($havingProp, $havingValue, $operator, 'OR');
}
/**
* This method allows you to concatenate joins for the final SQL statement.
*
* @uses $MySqliDb->join('table1', 'field1 <> field2', 'LEFT')
*
* @param string $joinTable The name of the table.
* @param string $joinCondition the condition.
* @param string $joinType 'LEFT', 'INNER' etc.
*
* @throws Exception
* @return MysqliDb
*/
public function join($joinTable, $joinCondition, $joinType = '')
{
$allowedTypes = array('LEFT', 'RIGHT', 'OUTER', 'INNER', 'LEFT OUTER', 'RIGHT OUTER');
$joinType = strtoupper(trim($joinType));
if ($joinType && !in_array($joinType, $allowedTypes)) {
throw new Exception('Wrong JOIN type: ' . $joinType);
}
if (!is_object($joinTable)) {
$joinTable = self::$prefix . $joinTable;
}
$this->_join[] = Array($joinType, $joinTable, $joinCondition);
return $this;
}
/**
* This is a basic method which allows you to import raw .CSV data into a table
* Please check out http://dev.mysql.com/doc/refman/5.7/en/load-data.html for a valid .csv file.
* @author Jonas Barascu (Noneatme)
* @param string $importTable The database table where the data will be imported into.
* @param string $importFile The file to be imported. Please use double backslashes \\ and make sure you
* @param string $importSettings An Array defining the import settings as described in the README.md
* @return boolean
*/
public function loadData($importTable, $importFile, $importSettings = null)
{
// We have to check if the file exists
if(!file_exists($importFile)) {
// Throw an exception
throw new Exception("importCSV -> importFile ".$importFile." does not exists!");
return;
}
// Define the default values
// We will merge it later
$settings = Array("fieldChar" => ';', "lineChar" => PHP_EOL, "linesToIgnore" => 1);
// Check the import settings
if(gettype($importSettings) == "array") {
// Merge the default array with the custom one
$settings = array_merge($settings, $importSettings);
}
// Add the prefix to the import table
$table = self::$prefix . $importTable;
// Add 1 more slash to every slash so maria will interpret it as a path
$importFile = str_replace("\\", "\\\\", $importFile);
// Build SQL Syntax
$sqlSyntax = sprintf('LOAD DATA INFILE \'%s\' INTO TABLE %s',
$importFile, $table);
// FIELDS
$sqlSyntax .= sprintf(' FIELDS TERMINATED BY \'%s\'', $settings["fieldChar"]);
if(isset($settings["fieldEnclosure"])) {
$sqlSyntax .= sprintf(' ENCLOSED BY \'%s\'', $settings["fieldEnclosure"]);
}
// LINES
$sqlSyntax .= sprintf(' LINES TERMINATED BY \'%s\'', $settings["lineChar"]);
if(isset($settings["lineStarting"])) {
$sqlSyntax .= sprintf(' STARTING BY \'%s\'', $settings["lineStarting"]);
}
// IGNORE LINES
$sqlSyntax .= sprintf(' IGNORE %d LINES', $settings["linesToIgnore"]);
// Exceute the query unprepared because LOAD DATA only works with unprepared statements.
$result = $this->queryUnprepared($sqlSyntax);