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-rw-r--r--system/libraries/drivers/Database/Mysqli.php358
1 files changed, 358 insertions, 0 deletions
diff --git a/system/libraries/drivers/Database/Mysqli.php b/system/libraries/drivers/Database/Mysqli.php
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+++ b/system/libraries/drivers/Database/Mysqli.php
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+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * MySQLi Database Driver
+ *
+ * $Id: Mysqli.php 4344 2009-05-11 16:41:39Z zombor $
+ *
+ * @package Core
+ * @author Kohana Team
+ * @copyright (c) 2007-2008 Kohana Team
+ * @license http://kohanaphp.com/license.html
+ */
+class Database_Mysqli_Driver extends Database_Mysql_Driver {
+
+ // Database connection link
+ protected $link;
+ protected $db_config;
+ protected $statements = array();
+
+ /**
+ * Sets the config for the class.
+ *
+ * @param array database configuration
+ */
+ public function __construct($config)
+ {
+ $this->db_config = $config;
+
+ Kohana::log('debug', 'MySQLi Database Driver Initialized');
+ }
+
+ /**
+ * Closes the database connection.
+ */
+ public function __destruct()
+ {
+ is_object($this->link) and $this->link->close();
+ }
+
+ public function connect()
+ {
+ // Check if link already exists
+ if (is_object($this->link))
+ return $this->link;
+
+ // Import the connect variables
+ extract($this->db_config['connection']);
+
+ // Build the connection info
+ $host = isset($host) ? $host : $socket;
+
+ // Make the connection and select the database
+ if ($this->link = new mysqli($host, $user, $pass, $database, $port))
+ {
+ if ($charset = $this->db_config['character_set'])
+ {
+ $this->set_charset($charset);
+ }
+
+ // Clear password after successful connect
+ $this->db_config['connection']['pass'] = NULL;
+
+ return $this->link;
+ }
+
+ return FALSE;
+ }
+
+ public function query($sql)
+ {
+ // Only cache if it's turned on, and only cache if it's not a write statement
+ if ($this->db_config['cache'] AND ! preg_match('#\b(?:INSERT|UPDATE|REPLACE|SET|DELETE|TRUNCATE)\b#i', $sql))
+ {
+ $hash = $this->query_hash($sql);
+
+ if ( ! isset($this->query_cache[$hash]))
+ {
+ // Set the cached object
+ $this->query_cache[$hash] = new Kohana_Mysqli_Result($this->link, $this->db_config['object'], $sql);
+ }
+ else
+ {
+ // Rewind cached result
+ $this->query_cache[$hash]->rewind();
+ }
+
+ // Return the cached query
+ return $this->query_cache[$hash];
+ }
+
+ return new Kohana_Mysqli_Result($this->link, $this->db_config['object'], $sql);
+ }
+
+ public function set_charset($charset)
+ {
+ if ($this->link->set_charset($charset) === FALSE)
+ throw new Kohana_Database_Exception('database.error', $this->show_error());
+ }
+
+ public function escape_str($str)
+ {
+ if (!$this->db_config['escape'])
+ return $str;
+
+ is_object($this->link) or $this->connect();
+
+ return $this->link->real_escape_string($str);
+ }
+
+ public function show_error()
+ {
+ return $this->link->error;
+ }
+
+} // End Database_Mysqli_Driver Class
+
+/**
+ * MySQLi Result
+ */
+class Kohana_Mysqli_Result extends Database_Result {
+
+ // Database connection
+ protected $link;
+
+ // Data fetching types
+ protected $fetch_type = 'mysqli_fetch_object';
+ protected $return_type = MYSQLI_ASSOC;
+
+ /**
+ * Sets up the result variables.
+ *
+ * @param object database link
+ * @param boolean return objects or arrays
+ * @param string SQL query that was run
+ */
+ public function __construct($link, $object = TRUE, $sql)
+ {
+ $this->link = $link;
+
+ if ( ! $this->link->multi_query($sql))
+ {
+ // SQL error
+ throw new Kohana_Database_Exception('database.error', $this->link->error.' - '.$sql);
+ }
+ else
+ {
+ $this->result = $this->link->store_result();
+
+ // If the query is an object, it was a SELECT, SHOW, DESCRIBE, EXPLAIN query
+ if (is_object($this->result))
+ {
+ $this->current_row = 0;
+ $this->total_rows = $this->result->num_rows;
+ $this->fetch_type = ($object === TRUE) ? 'fetch_object' : 'fetch_array';
+ }
+ elseif ($this->link->error)
+ {
+ // SQL error
+ throw new Kohana_Database_Exception('database.error', $this->link->error.' - '.$sql);
+ }
+ else
+ {
+ // Its an DELETE, INSERT, REPLACE, or UPDATE query
+ $this->insert_id = $this->link->insert_id;
+ $this->total_rows = $this->link->affected_rows;
+ }
+ }
+
+ // Set result type
+ $this->result($object);
+
+ // Store the SQL
+ $this->sql = $sql;
+ }
+
+ /**
+ * Magic __destruct function, frees the result.
+ */
+ public function __destruct()
+ {
+ if (is_object($this->result))
+ {
+ $this->result->free_result();
+
+ // this is kinda useless, but needs to be done to avoid the "Commands out of sync; you
+ // can't run this command now" error. Basically, we get all results after the first one
+ // (the one we actually need) and free them.
+ if (is_resource($this->link) AND $this->link->more_results())
+ {
+ do
+ {
+ if ($result = $this->link->store_result())
+ {
+ $result->free_result();
+ }
+ } while ($this->link->next_result());
+ }
+ }
+ }
+
+ public function result($object = TRUE, $type = MYSQLI_ASSOC)
+ {
+ $this->fetch_type = ((bool) $object) ? 'fetch_object' : 'fetch_array';
+
+ // This check has to be outside the previous statement, because we do not
+ // know the state of fetch_type when $object = NULL
+ // NOTE - The class set by $type must be defined before fetching the result,
+ // autoloading is disabled to save a lot of stupid overhead.
+ if ($this->fetch_type == 'fetch_object')
+ {
+ $this->return_type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
+ }
+ else
+ {
+ $this->return_type = $type;
+ }
+
+ return $this;
+ }
+
+ public function as_array($object = NULL, $type = MYSQLI_ASSOC)
+ {
+ return $this->result_array($object, $type);
+ }
+
+ public function result_array($object = NULL, $type = MYSQLI_ASSOC)
+ {
+ $rows = array();
+
+ if (is_string($object))
+ {
+ $fetch = $object;
+ }
+ elseif (is_bool($object))
+ {
+ if ($object === TRUE)
+ {
+ $fetch = 'fetch_object';
+
+ // NOTE - The class set by $type must be defined before fetching the result,
+ // autoloading is disabled to save a lot of stupid overhead.
+ $type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
+ }
+ else
+ {
+ $fetch = 'fetch_array';
+ }
+ }
+ else
+ {
+ // Use the default config values
+ $fetch = $this->fetch_type;
+
+ if ($fetch == 'fetch_object')
+ {
+ $type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
+ }
+ }
+
+ if ($this->result->num_rows)
+ {
+ // Reset the pointer location to make sure things work properly
+ $this->result->data_seek(0);
+
+ while ($row = $this->result->$fetch($type))
+ {
+ $rows[] = $row;
+ }
+ }
+
+ return isset($rows) ? $rows : array();
+ }
+
+ public function list_fields()
+ {
+ $field_names = array();
+ while ($field = $this->result->fetch_field())
+ {
+ $field_names[] = $field->name;
+ }
+
+ return $field_names;
+ }
+
+ public function seek($offset)
+ {
+ if ($this->offsetExists($offset) AND $this->result->data_seek($offset))
+ {
+ // Set the current row to the offset
+ $this->current_row = $offset;
+
+ return TRUE;
+ }
+
+ return FALSE;
+ }
+
+ public function offsetGet($offset)
+ {
+ if ( ! $this->seek($offset))
+ return FALSE;
+
+ // Return the row
+ $fetch = $this->fetch_type;
+ return $this->result->$fetch($this->return_type);
+ }
+
+} // End Mysqli_Result Class
+
+/**
+ * MySQLi Prepared Statement (experimental)
+ */
+class Kohana_Mysqli_Statement {
+
+ protected $link = NULL;
+ protected $stmt;
+ protected $var_names = array();
+ protected $var_values = array();
+
+ public function __construct($sql, $link)
+ {
+ $this->link = $link;
+
+ $this->stmt = $this->link->prepare($sql);
+
+ return $this;
+ }
+
+ public function __destruct()
+ {
+ $this->stmt->close();
+ }
+
+ // Sets the bind parameters
+ public function bind_params($param_types, $params)
+ {
+ $this->var_names = array_keys($params);
+ $this->var_values = array_values($params);
+ call_user_func_array(array($this->stmt, 'bind_param'), array_merge($param_types, $var_names));
+
+ return $this;
+ }
+
+ public function bind_result($params)
+ {
+ call_user_func_array(array($this->stmt, 'bind_result'), $params);
+ }
+
+ // Runs the statement
+ public function execute()
+ {
+ foreach ($this->var_names as $key => $name)
+ {
+ $$name = $this->var_values[$key];
+ }
+ $this->stmt->execute();
+ return $this->stmt;
+ }
+}
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