/**
* Fetches the keys for a MySQL database
*
* @return array The keys arrays for every table in the database - see ::getKeys() for details
*/
private function fetchMySQLKeys()
{
$tables = $this->getTables();
$keys = array();
foreach ($tables as $table) {
$keys[$table] = array();
$keys[$table]['primary'] = array();
$keys[$table]['foreign'] = array();
$keys[$table]['unique'] = array();
$result = $this->database->query('SHOW CREATE TABLE `' . substr($this->database->escape('string', $table), 1, -1) . '`');
$row = $result->fetchRow();
// Primary keys
preg_match_all('/PRIMARY KEY\\s+\\("(.*?)"\\),?\\n/U', $row['Create Table'], $matches, PREG_SET_ORDER);
if (!empty($matches)) {
$keys[$table]['primary'] = explode('","', $matches[0][1]);
}
// Unique keys
preg_match_all('/UNIQUE KEY\\s+"([^"]+)"\\s+\\("(.*?)"\\),?\\n/U', $row['Create Table'], $matches, PREG_SET_ORDER);
foreach ($matches as $match) {
$keys[$table]['unique'][] = explode('","', $match[2]);
}
// Foreign keys
preg_match_all('#FOREIGN KEY \\("([^"]+)"\\) REFERENCES "([^"]+)" \\("([^"]+)"\\)(?:\\sON\\sDELETE\\s(SET\\sNULL|SET\\sDEFAULT|CASCADE|NO\\sACTION|RESTRICT))?(?:\\sON\\sUPDATE\\s(SET\\sNULL|SET\\sDEFAULT|CASCADE|NO\\sACTION|RESTRICT))?#', $row['Create Table'], $matches, PREG_SET_ORDER);
foreach ($matches as $match) {
$temp = array('column' => $match[1], 'foreign_table' => $match[2], 'foreign_column' => $match[3], 'on_delete' => 'no_action', 'on_update' => 'no_action');
if (isset($match[4])) {
$temp['on_delete'] = strtolower(str_replace(' ', '_', $match[4]));
}
if (isset($match[5])) {
$temp['on_update'] = strtolower(str_replace(' ', '_', $match[5]));
}
$keys[$table]['foreign'][] = $temp;
}
}
return $keys;
}
/**
* Translates Flourish SQL `ALTER TABLE * RENAME TO` statements to the appropriate
* statements for SQLite
*
* @param string $sql The SQL statements that will be executed against the database
* @param array &$extra_statements Any extra SQL statements required for SQLite
* @param array $data Data parsed from the `ALTER TABLE` statement
* @return string The modified SQL statement
*/
private function translateSQLiteRenameTableStatements($sql, &$extra_statements, $data)
{
$tables = $this->getSQLiteTables();
if (in_array($data['new_table_name'], $tables)) {
$this->throwException(self::compose('A table with the name "%1$s" already exists', $data['new_table_name']), $sql);
}
if (!in_array($data['table'], $tables)) {
$this->throwException(self::compose('The table specified, "%1$s", does not exist', $data['table']), $sql);
}
// We start by dropping all references to this table
$foreign_keys = $this->getSQLiteForeignKeys($data['table']);
foreach ($foreign_keys as $foreign_key) {
$extra_statements = array_merge($extra_statements, $this->database->preprocess("ALTER TABLE %r DROP FOREIGN KEY (%r)", array($foreign_key['table'], $foreign_key['column']), TRUE));
}
// SQLite 2 does not natively support renaming tables, so we have to do
// it by creating a new table name and copying all data and indexes
if (version_compare($this->database->getVersion(), 3, '<')) {
$renamed_create_sql = preg_replace('#^\\s*CREATE\\s+TABLE\\s+["\\[`\']?\\w+["\\]`\']?\\s+#i', 'CREATE TABLE "' . $data['new_table_name'] . '" ', $this->getSQLiteCreateTable($data['table']));
$this->addSQLiteTable($data['new_table_name'], $renamed_create_sql);
// We rename string placeholders to prevent confusion with
// string placeholders that are added by call to fDatabase
$renamed_create_sql = str_replace(':string_', ':sub_string_', $renamed_create_sql);
$create_statements = str_replace(':sub_string_', ':string_', $this->database->preprocess($renamed_create_sql, array(), TRUE));
$extra_statements[] = array_shift($create_statements);
// Recreate the indexes on the new table
$indexes = $this->getSQLiteIndexes($data['table']);
foreach ($indexes as $name => $index) {
$create_sql = $index['sql'];
preg_match('#^\\s*CREATE\\s+(?:UNIQUE\\s+)?INDEX\\s+(?:[\'"`\\[]?\\w+[\'"`\\]]?\\.)?[\'"`\\[]?\\w+[\'"`\\]]?\\s+(ON\\s+[\'"`\\[]?\\w+[\'"`\\]]?)\\s*(\\((\\s*(?:\\s*[\'"`\\[]?\\w+[\'"`\\]]?\\s*,\\s*)*[\'"`\\[]?\\w+[\'"`\\]]?\\s*)\\))\\s*$#Di', $create_sql, $match);
// Fix the table name to the new table
$create_sql = str_replace($match[1], preg_replace('#(?:`|\'|"|\\[|\\b)?' . preg_quote($data['table'], '#') . '(?:`|\'|"|\\]|\\b)?#i', '"' . $data['new_table_name'] . '"', $match[1]), $create_sql);
// We change the name of the index to keep it in sync
// with the new table name
$new_name = preg_replace('#^' . preg_quote($data['table'], '#') . '_#i', $data['new_table_name'] . '_', $name);
$create_sql = preg_replace('#[\'"`\\[]?' . preg_quote($name, '#') . '[\'"`\\]]?(\\s+ON\\s+)#i', '"' . $new_name . '"\\1', $create_sql);
$extra_statements[] = $create_sql;
$this->addSQLiteIndex($new_name, $data['new_table_name'], $create_sql);
}
$column_names = $this->getSQLiteColumns($data['table']);
$extra_statements[] = $this->database->escape("INSERT INTO %r (%r) SELECT %r FROM %r", $data['new_table_name'], $column_names, $column_names, $data['table']);
$extra_statements = array_merge($extra_statements, $create_statements);
$extra_statements = array_merge($extra_statements, $this->database->preprocess("DROP TABLE %r", array($data['table']), TRUE));
// SQLite 3 natively supports renaming tables, but it does not fix
// references to the old table name inside of trigger bodies
} else {
// We add the rename SQL in the middle so it happens after we drop the
// foreign key constraints and before we re-add them
$extra_statements[] = $sql;
$this->addSQLiteTable($data['new_table_name'], preg_replace('#^\\s*CREATE\\s+TABLE\\s+[\'"\\[`]?\\w+[\'"\\]`]?\\s+#i', 'CREATE TABLE "' . $data['new_table_name'] . '" ', $this->getSQLiteCreateTable($data['table'])));
$this->removeSQLiteTable($data['table']);
// Copy the trigger definitions to the new table name
foreach ($this->getSQLiteTriggers() as $name => $trigger) {
if ($trigger['table'] == $data['table']) {
$this->addSQLiteTrigger($name, $data['new_table_name'], $trigger['sql']);
}
}
// Move the index definitions to the new table name
foreach ($this->getSQLiteIndexes($data['table']) as $name => $index) {
$this->addSQLiteIndex($name, $data['new_table_name'], preg_replace('#(\\s+ON\\s+)["\'`\\[]?\\w+["\'`\\]]?#', '\\1"' . preg_quote($data['new_table_name'], '#') . '"', $index['sql']));
}
foreach ($this->getSQLiteTriggers() as $name => $trigger) {
$create_sql = $trigger['sql'];
$create_sql = preg_replace('#( on table )"' . $data['table'] . '"#i', '\\1"' . $data['new_table_name'] . '"', $create_sql);
$create_sql = preg_replace('#(\\s+FROM\\s+)(`' . $data['table'] . '`|"' . $data['table'] . '"|\'' . $data['table'] . '\'|' . $data['table'] . '|\\[' . $data['table'] . '\\])#i', '\\1"' . $data['new_table_name'] . '"', $create_sql);
if ($create_sql != $trigger['sql']) {
$extra_statements[] = $this->database->escape("DROP TRIGGER %r", $name);
$this->removeSQLiteTrigger($name);
$this->addSQLiteTrigger($name, $data['new_table_name'], $create_sql);
$extra_statements[] = $create_sql;
}
}
}
// Here we recreate the references that we dropped at the beginning
foreach ($foreign_keys as $foreign_key) {
$extra_statements = array_merge($extra_statements, $this->database->preprocess("ALTER TABLE %r ADD FOREIGN KEY (%r) REFERENCES %r(%r) ON UPDATE " . $foreign_key['on_update'] . " ON DELETE " . $foreign_key['on_delete'], array($foreign_key['table'], $foreign_key['column'], $data['new_table_name'], $foreign_key['foreign_column']), TRUE));
}
// Remove any nested transactions
$extra_statements = array_diff($extra_statements, array("BEGIN", "COMMIT"));
// Since the actual rename or create/drop has to happen after adjusting
// foreign keys, we previously added it in the appropriate place and
// now need to provide the first statement to be run
return array_shift($extra_statements);
}
/**
* Adds `WHERE` params to the SQL for the primary keys of this record set
*
* @param fDatabase $db The database the query will be executed on
* @param fSchema $schema The schema for the database
* @param array $params The parameters for the fDatabase::query() call
* @param string $route The route to this table from another table
* @return array The params with the `WHERE` clause added
*/
private function addWhereParams($db, $schema, $params, $route = NULL)
{
$table = fORM::tablize($this->class);
$table_with_route = $route ? $table . '{' . $route . '}' : $table;
$pk_columns = $schema->getKeys($table, 'primary');
// We have a multi-field primary key, making things kinda ugly
if (sizeof($pk_columns) > 1) {
$escape_pk_columns = array();
foreach ($pk_columns as $pk_column) {
$escaped_pk_columns[$pk_column] = $db->escape('%r', $table_with_route . '.' . $pk_column);
}
$column_info = $schema->getColumnInfo($table);
$conditions = array();
foreach ($this->getPrimaryKeys() as $primary_key) {
$sub_conditions = array();
foreach ($pk_columns as $pk_column) {
$value = $primary_key[$pk_column];
// This makes sure the query performs the way an insert will
if ($value === NULL && $column_info[$pk_column]['not_null'] && $column_info[$pk_column]['default'] !== NULL) {
$value = $column_info[$pk_column]['default'];
}
$sub_conditions[] = str_replace('%r', $escaped_pk_columns[$pk_column], fORMDatabase::makeCondition($schema, $table, $pk_column, '=', $value));
$params[] = $value;
}
$conditions[] = join(' AND ', $sub_conditions);
}
$params[0] .= '(' . join(') OR (', $conditions) . ')';
// We have a single primary key field, making things nice and easy
} else {
$first_pk_column = $pk_columns[0];
$params[0] .= $db->escape('%r IN ', $table_with_route . '.' . $first_pk_column);
$params[0] .= '(' . $schema->getColumnInfo($table, $first_pk_column, 'placeholder') . ')';
$params[] = $this->getPrimaryKeys();
}
return $params;
}
/**
* Finds all of the table names in the SQL and creates the appropriate `FROM` and `GROUP BY` clauses with all necessary joins
*
* The SQL string should contain two placeholders, `:from_clause` and
* `:group_by_clause`. All columns should be qualified with their full table
* name. Here is an example SQL string to pass in presumming that the
* tables users and groups are in a relationship:
*
* {{{
* SELECT users.* FROM :from_clause WHERE groups.group_id = 5 :group_by_clause ORDER BY lower(users.first_name) ASC
* }}}
*
* @internal
*
* @param fDatabase $db The database the query is to be executed on
* @param fSchema $schema The schema for the database
* @param array $params The parameters for the fDatabase::query() call
* @param string $table The main table to be queried
* @return array The params with the SQL `FROM` and `GROUP BY` clauses injected
*/
public static function injectFromAndGroupByClauses($db, $schema, $params, $table)
{
$table = self::cleanTableName($schema, $table);
$joins = array();
if (strpos($params[0], ':from_clause') === FALSE) {
throw new fProgrammerException('No %1$s placeholder was found in:%2$s', ':from_clause', "\n" . $params[0]);
}
if (strpos($params[0], ':group_by_clause') === FALSE && !preg_match('#group\\s+by#i', $params[0])) {
throw new fProgrammerException('No %1$s placeholder was found in:%2$s', ':group_by_clause', "\n" . $params[0]);
}
$has_group_by_placeholder = strpos($params[0], ':group_by_clause') !== FALSE ? TRUE : FALSE;
// Separate the SQL from quoted values
preg_match_all("#(?:'(?:''|\\\\'|\\\\[^']|[^'\\\\])*')|(?:[^']+)#", $params[0], $matches);
$table_alias = $table;
$used_aliases = array();
$table_map = array();
// If we are not passing in existing joins, start with the specified table
if (!$joins) {
$joins[] = array('join_type' => 'none', 'table_name' => $table, 'table_alias' => $table_alias);
}
$used_aliases[] = $table_alias;
foreach ($matches[0] as $match) {
if ($match[0] != "'") {
// This removes quotes from around . in the {route} specified of a shorthand column name
$match = preg_replace('#(\\{\\w+)"\\."(\\w+\\})#', '\\1.\\2', $match);
//fCore::expose($match);
preg_match_all('#(?<!\\w|"|=>)((?:"?((?:\\w+"?\\."?)?\\w+)(?:\\{([\\w.]+)\\})?"?=>)?("?(?:\\w+"?\\."?)?\\w+)(?:\\{([\\w.]+)\\})?"?)\\."?\\w+"?(?=[^\\w".{])#m', $match, $table_matches, PREG_SET_ORDER);
foreach ($table_matches as $table_match) {
if (!isset($table_match[5])) {
$table_match[5] = NULL;
}
if (!empty($table_match[2])) {
$table_match[2] = self::cleanTableName($schema, $table_match[2]);
}
$table_match[4] = self::cleanTableName($schema, $table_match[4]);
if (in_array($db->getType(), array('oracle', 'db2'))) {
foreach (array(2, 3, 4, 5) as $subpattern) {
if (isset($table_match[$subpattern])) {
$table_match[$subpattern] = strtolower($table_match[$subpattern]);
}
}
}
// This is a related table that is going to join to a once-removed table
if (!empty($table_match[2])) {
$related_table = $table_match[2];
$route = fORMSchema::getRouteName($schema, $table, $related_table, $table_match[3]);
$join_name = $table . '_' . $related_table . '{' . $route . '}';
$once_removed_table = $table_match[4];
// Add the once removed table to the aliases in case we also join directly to it
// which may cause the replacements later in this method to convert first to the
// real table name and then from the real table to the real table's alias
if (!in_array($once_removed_table, $used_aliases)) {
$used_aliases[] = $once_removed_table;
}
self::createJoin($schema, $table, $table_alias, $related_table, $route, $joins, $used_aliases);
$route = fORMSchema::getRouteName($schema, $related_table, $once_removed_table, $table_match[5]);
$join_name = self::createJoin($schema, $related_table, $joins[$join_name]['table_alias'], $once_removed_table, $route, $joins, $used_aliases);
$table_map[$table_match[1]] = $db->escape('%r', $joins[$join_name]['table_alias']);
// Remove the once removed table from the aliases so we also join directly to it without an alias
unset($used_aliases[array_search($once_removed_table, $used_aliases)]);
// This is a related table
} elseif (($table_match[4] != $table || fORMSchema::getRoutes($schema, $table, $table_match[4])) && self::cleanTableName($schema, $table_match[1]) != $table) {
$related_table = $table_match[4];
$route = fORMSchema::getRouteName($schema, $table, $related_table, $table_match[5]);
// If the related table is the current table and it is a one-to-many we don't want to join
if ($table_match[4] == $table) {
$one_to_many_routes = fORMSchema::getRoutes($schema, $table, $related_table, 'one-to-many');
if (isset($one_to_many_routes[$route])) {
$table_map[$table_match[1]] = $db->escape('%r', $table_alias);
continue;
}
}
$join_name = self::createJoin($schema, $table, $table_alias, $related_table, $route, $joins, $used_aliases);
$table_map[$table_match[1]] = $db->escape('%r', $joins[$join_name]['table_alias']);
}
}
}
}
// Determine if we joined a *-to-many relationship
$joined_to_many = FALSE;
foreach ($joins as $name => $join) {
if (is_numeric($name)) {
continue;
}
if (substr($name, -5) == '_join') {
$joined_to_many = TRUE;
break;
}
$main_table = preg_replace('#_' . $join['table_name'] . '{\\w+}$#iD', '', $name);
$second_table = $join['table_name'];
$route = preg_replace('#^[^{]+{([\\w.]+)}$#D', '\\1', $name);
$routes = fORMSchema::getRoutes($schema, $main_table, $second_table, '*-to-many');
if (isset($routes[$route])) {
$joined_to_many = TRUE;
break;
}
}
$found_order_by = FALSE;
$from_clause = self::createFromClauseFromJoins($db, $joins);
// If we are joining on a *-to-many relationship we need to group by the
// columns in the main table to prevent duplicate entries
if ($joined_to_many) {
$column_info = $schema->getColumnInfo($table);
$columns = array();
foreach ($column_info as $column => $info) {
$columns[] = $table . '.' . $column;
}
$group_by_columns = $db->escape('%r ', $columns);
$group_by_clause = ' GROUP BY ' . $group_by_columns;
} else {
$group_by_clause = ' ';
$group_by_columns = '';
}
// Put the SQL back together
$new_sql = '';
$preg_table_pattern = preg_quote($table, '#') . '\\.|' . preg_quote('"' . $table . '"', '#') . '\\.';
foreach ($matches[0] as $match) {
$temp_sql = $match;
// Get rid of the => notation and the :from_clause placeholder
if ($match[0] !== "'") {
// This removes quotes from around . in the {route} specified of a shorthand column name
$temp_sql = preg_replace('#(\\{\\w+)"\\."(\\w+\\})#', '\\1.\\2', $match);
foreach ($table_map as $arrow_table => $alias) {
$temp_sql = preg_replace('#(?<![\\w"])' . preg_quote($arrow_table, '#') . '(?!=[\\w"])#', $alias, $temp_sql);
}
// In the ORDER BY clause we need to wrap columns in
if ($found_order_by && $joined_to_many) {
$temp_sql = preg_replace('#(?<!avg\\(|count\\(|max\\(|min\\(|sum\\(|cast\\(|case |when |"|avg\\("|count\\("|max\\("|min\\("|sum\\("|cast\\("|case "|when "|\\{)\\b((?!' . $preg_table_pattern . ')("?\\w+"?\\.)?"?\\w+"?\\."?\\w+"?)(?![^\\w."])#i', 'max(\\1)', $temp_sql);
}
if ($joined_to_many && preg_match('#order\\s+by#i', $temp_sql)) {
$order_by_found = TRUE;
$parts = preg_split('#(order\\s+by)#i', $temp_sql, -1, PREG_SPLIT_DELIM_CAPTURE);
$parts[2] = $temp_sql = preg_replace('#(?<!avg\\(|count\\(|max\\(|min\\(|sum\\(|cast\\(|case |when |"|avg\\("|count\\("|max\\("|min\\("|sum\\("|cast\\("|case "|when "|\\{)\\b((?!' . $preg_table_pattern . ')("?\\w+"?\\.)?"?\\w+"?\\."?\\w+"?)(?![^\\w."])#i', 'max(\\1)', $parts[2]);
$temp_sql = join('', $parts);
}
$temp_sql = str_replace(':from_clause', $from_clause, $temp_sql);
if ($has_group_by_placeholder) {
$temp_sql = preg_replace('#\\s:group_by_clause(\\s|$)#', strtr($group_by_clause, array('\\' => '\\\\', '$' => '\\$')), $temp_sql);
} elseif ($group_by_columns) {
$temp_sql = preg_replace('#(\\sGROUP\\s+BY\\s((?!HAVING|ORDER\\s+BY).)*)\\s#i', '\\1, ' . strtr($group_by_columns, array('\\' => '\\\\', '$' => '\\$')), $temp_sql);
}
}
$new_sql .= $temp_sql;
}
$params[0] = $new_sql;
return $params;
}
/**
* Takes an array of parameters and prepares them for use in a prepared statement
*
* @param array $params The parameters
* @return array The prepared parameters
*/
private function prepareParams($params)
{
$type = $this->database->getType();
$extension = $this->database->getExtension();
$statement = $this->statement;
$new_params = array();
// The mysqli extension requires all params be set in one call
$params_reference = array();
$params_type = '';
foreach ($params as $i => $param) {
// Prepared statements don't support multi-value params
if (is_array($param)) {
throw new fProgrammerException('The value passed for placeholder #%s is an array, however multiple values are not supported with prepared statements', $i + 1);
}
// A few of the database extensions don't have prepared statement support
// so instead we don't bother preparing the params, we just do a normal escape
if (in_array($extension, array('mssql', 'mysql', 'sqlite'))) {
$new_params[] = $params[$i];
continue;
}
$placeholder = $this->placeholders[$i];
// We want to normally escape all values except strings
// since that actually changed the string
if (!in_array($placeholder, array('%l', '%s'))) {
$params[$i] = $this->database->escape($placeholder, $params[$i]);
// Dates, times, timestamps and some booleans need to be unquoted
if (in_array($placeholder, array('%d', '%t', '%p')) || ($type == 'mssql' || $type == 'sqlite' || $type == 'db2') && $placeholder == '%b') {
$params[$i] = substr($params[$i], 1, -1);
// Some booleans need to be converted to integers
} elseif ($placeholder == '%b' && ($type == 'postgresql' || $type == 'mysql')) {
$params[$i] = $params[$i] == 'TRUE' ? 1 : 0;
}
// For strings and blobs we need to manually cast objects
// This is done in fDatabase::escape() for all other types
} else {
if (is_object($params[$i]) && is_callable(array($params[$i], '__toString'))) {
$params[$i] = $params[$i]->__toString();
} elseif (is_object($params[$i])) {
$params[$i] = (string) $params[$i];
}
}
// For the database extensions that require is, here we bind params
// to the actual statements using the appropriate data types
switch ($extension) {
case 'mysqli':
switch ($placeholder) {
case '%l':
// Blobs that are larger than the packet size have to have NULL
// bound and then the data sent via the long data function
$n = NULL;
$params_type .= 'b';
$params_reference[$i] =& $params[$i];
$statement->send_long_data($i, $params[$i]);
break;
case '%b':
$params_type .= 'i';
$params_reference[$i] =& $params[$i];
break;
case '%f':
$params_type .= 'd';
$params_reference[$i] =& $params[$i];
break;
case '%d':
case '%i':
// Ints are sent as strings to get past 32 bit int limit, allowing unsigned ints
// Ints are sent as strings to get past 32 bit int limit, allowing unsigned ints
case '%s':
case '%t':
case '%p':
$params_type .= 's';
$params_reference[$i] =& $params[$i];
break;
}
break;
case 'oci8':
switch ($placeholder) {
case '%l':
oci_bind_by_name($statement, ':p' . ($i + 1), $params[$i], -1, SQLT_BLOB);
break;
case '%b':
case '%i':
oci_bind_by_name($statement, ':p' . ($i + 1), $params[$i], -1, SQLT_INT);
break;
case '%d':
case '%f':
// There is no constant for floats, so we treat them as strings
// There is no constant for floats, so we treat them as strings
case '%s':
case '%t':
case '%p':
oci_bind_by_name($statement, ':p' . ($i + 1), $params[$i], -1, SQLT_CHR);
break;
}
break;
case 'odbc':
// ODBC does not allow strings that start and end with single quotes, so a space must be added at the end
if (is_string($params[$i]) && strlen($params[$i]) >= 2 && $params[$i][0] == "'" && $params[$i][strlen($params[$i]) - 1] == "'") {
$params[$i] .= ' ';
}
break;
case 'pdo':
switch ($placeholder) {
case '%l':
$statement->bindParam($i + 1, $params[$i], $params[$i] === NULL ? PDO::PARAM_NULL : PDO::PARAM_LOB);
break;
case '%b':
$statement->bindParam($i + 1, $params[$i], $params[$i] === NULL ? PDO::PARAM_NULL : PDO::PARAM_BOOL);
break;
case '%i':
$statement->bindParam($i + 1, $params[$i], $params[$i] === NULL ? PDO::PARAM_NULL : PDO::PARAM_INT);
break;
case '%d':
case '%f':
// For some reason float are supposed to be bound as strings
// For some reason float are supposed to be bound as strings
case '%s':
case '%t':
case '%p':
$statement->bindParam($i + 1, $params[$i], $params[$i] === NULL ? PDO::PARAM_NULL : PDO::PARAM_STR);
break;
}
break;
case 'sqlsrv':
$this->bound_params[$i] = $params[$i];
break;
}
$new_params[] = $params[$i];
}
if ($extension == 'mysqli') {
array_unshift($params_reference, $params_type);
call_user_func_array(array($statement, 'bind_param'), $params_reference);
}
return $new_params;
}
