diff options
Diffstat (limited to 'phpBB/phpbb/db/driver/driver.php')
| -rw-r--r-- | phpBB/phpbb/db/driver/driver.php | 1038 |
1 files changed, 1038 insertions, 0 deletions
diff --git a/phpBB/phpbb/db/driver/driver.php b/phpBB/phpbb/db/driver/driver.php new file mode 100644 index 0000000000..b61800006f --- /dev/null +++ b/phpBB/phpbb/db/driver/driver.php @@ -0,0 +1,1038 @@ +<?php +/** +* +* @package dbal +* @copyright (c) 2005 phpBB Group +* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2 +* +*/ + +namespace phpbb\db\driver; + +/** +* Database Abstraction Layer +* @package dbal +*/ +class driver +{ + var $db_connect_id; + var $query_result; + var $return_on_error = false; + var $transaction = false; + var $sql_time = 0; + var $num_queries = array(); + var $open_queries = array(); + + var $curtime = 0; + var $query_hold = ''; + var $html_hold = ''; + var $sql_report = ''; + + var $persistency = false; + var $user = ''; + var $server = ''; + var $dbname = ''; + + // Set to true if error triggered + var $sql_error_triggered = false; + + // Holding the last sql query on sql error + var $sql_error_sql = ''; + // Holding the error information - only populated if sql_error_triggered is set + var $sql_error_returned = array(); + + // Holding transaction count + var $transactions = 0; + + // Supports multi inserts? + var $multi_insert = false; + + /** + * Current sql layer + */ + var $sql_layer = ''; + + /** + * Wildcards for matching any (%) or exactly one (_) character within LIKE expressions + */ + var $any_char; + var $one_char; + + /** + * Exact version of the DBAL, directly queried + */ + var $sql_server_version = false; + + /** + * Constructor + */ + function __construct() + { + $this->num_queries = array( + 'cached' => 0, + 'normal' => 0, + 'total' => 0, + ); + + // Fill default sql layer based on the class being called. + // This can be changed by the specified layer itself later if needed. + $this->sql_layer = substr(get_class($this), strlen('phpbb\db\driver\\')); + + // Do not change this please! This variable is used to easy the use of it - and is hardcoded. + $this->any_char = chr(0) . '%'; + $this->one_char = chr(0) . '_'; + } + + /** + * return on error or display error message + */ + function sql_return_on_error($fail = false) + { + $this->sql_error_triggered = false; + $this->sql_error_sql = ''; + + $this->return_on_error = $fail; + } + + /** + * Return number of sql queries and cached sql queries used + */ + function sql_num_queries($cached = false) + { + return ($cached) ? $this->num_queries['cached'] : $this->num_queries['normal']; + } + + /** + * Add to query count + */ + function sql_add_num_queries($cached = false) + { + $this->num_queries['cached'] += ($cached !== false) ? 1 : 0; + $this->num_queries['normal'] += ($cached !== false) ? 0 : 1; + $this->num_queries['total'] += 1; + } + + /** + * DBAL garbage collection, close sql connection + */ + function sql_close() + { + if (!$this->db_connect_id) + { + return false; + } + + if ($this->transaction) + { + do + { + $this->sql_transaction('commit'); + } + while ($this->transaction); + } + + foreach ($this->open_queries as $query_id) + { + $this->sql_freeresult($query_id); + } + + // Connection closed correctly. Set db_connect_id to false to prevent errors + if ($result = $this->_sql_close()) + { + $this->db_connect_id = false; + } + + return $result; + } + + /** + * Build LIMIT query + * Doing some validation here. + */ + function sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0) + { + if (empty($query)) + { + return false; + } + + // Never use a negative total or offset + $total = ($total < 0) ? 0 : $total; + $offset = ($offset < 0) ? 0 : $offset; + + return $this->_sql_query_limit($query, $total, $offset, $cache_ttl); + } + + /** + * Fetch all rows + */ + function sql_fetchrowset($query_id = false) + { + if ($query_id === false) + { + $query_id = $this->query_result; + } + + if ($query_id !== false) + { + $result = array(); + while ($row = $this->sql_fetchrow($query_id)) + { + $result[] = $row; + } + + return $result; + } + + return false; + } + + /** + * Seek to given row number + * rownum is zero-based + */ + function sql_rowseek($rownum, &$query_id) + { + global $cache; + + if ($query_id === false) + { + $query_id = $this->query_result; + } + + if ($cache && $cache->sql_exists($query_id)) + { + return $cache->sql_rowseek($rownum, $query_id); + } + + if ($query_id === false) + { + return false; + } + + $this->sql_freeresult($query_id); + $query_id = $this->sql_query($this->last_query_text); + + if ($query_id === false) + { + return false; + } + + // We do not fetch the row for rownum == 0 because then the next resultset would be the second row + for ($i = 0; $i < $rownum; $i++) + { + if (!$this->sql_fetchrow($query_id)) + { + return false; + } + } + + return true; + } + + /** + * Fetch field + * if rownum is false, the current row is used, else it is pointing to the row (zero-based) + */ + function sql_fetchfield($field, $rownum = false, $query_id = false) + { + global $cache; + + if ($query_id === false) + { + $query_id = $this->query_result; + } + + if ($query_id !== false) + { + if ($rownum !== false) + { + $this->sql_rowseek($rownum, $query_id); + } + + if ($cache && !is_object($query_id) && $cache->sql_exists($query_id)) + { + return $cache->sql_fetchfield($query_id, $field); + } + + $row = $this->sql_fetchrow($query_id); + return (isset($row[$field])) ? $row[$field] : false; + } + + return false; + } + + /** + * Correctly adjust LIKE expression for special characters + * Some DBMS are handling them in a different way + * + * @param string $expression The expression to use. Every wildcard is escaped, except $this->any_char and $this->one_char + * @return string LIKE expression including the keyword! + */ + function sql_like_expression($expression) + { + $expression = utf8_str_replace(array('_', '%'), array("\_", "\%"), $expression); + $expression = utf8_str_replace(array(chr(0) . "\_", chr(0) . "\%"), array('_', '%'), $expression); + + return $this->_sql_like_expression('LIKE \'' . $this->sql_escape($expression) . '\''); + } + + /** + * Build a case expression + * + * Note: The two statements action_true and action_false must have the same data type (int, vchar, ...) in the database! + * + * @param string $condition The condition which must be true, to use action_true rather then action_else + * @param string $action_true SQL expression that is used, if the condition is true + * @param string $action_else SQL expression that is used, if the condition is false, optional + * @return string CASE expression including the condition and statements + */ + public function sql_case($condition, $action_true, $action_false = false) + { + $sql_case = 'CASE WHEN ' . $condition; + $sql_case .= ' THEN ' . $action_true; + $sql_case .= ($action_false !== false) ? ' ELSE ' . $action_false : ''; + $sql_case .= ' END'; + return $sql_case; + } + + /** + * Build a concatenated expression + * + * @param string $expr1 Base SQL expression where we append the second one + * @param string $expr2 SQL expression that is appended to the first expression + * @return string Concatenated string + */ + public function sql_concatenate($expr1, $expr2) + { + return $expr1 . ' || ' . $expr2; + } + + /** + * Returns whether results of a query need to be buffered to run a transaction while iterating over them. + * + * @return bool Whether buffering is required. + */ + function sql_buffer_nested_transactions() + { + return false; + } + + /** + * SQL Transaction + * @access private + */ + function sql_transaction($status = 'begin') + { + switch ($status) + { + case 'begin': + // If we are within a transaction we will not open another one, but enclose the current one to not loose data (prevening auto commit) + if ($this->transaction) + { + $this->transactions++; + return true; + } + + $result = $this->_sql_transaction('begin'); + + if (!$result) + { + $this->sql_error(); + } + + $this->transaction = true; + break; + + case 'commit': + // If there was a previously opened transaction we do not commit yet... but count back the number of inner transactions + if ($this->transaction && $this->transactions) + { + $this->transactions--; + return true; + } + + // Check if there is a transaction (no transaction can happen if there was an error, with a combined rollback and error returning enabled) + // This implies we have transaction always set for autocommit db's + if (!$this->transaction) + { + return false; + } + + $result = $this->_sql_transaction('commit'); + + if (!$result) + { + $this->sql_error(); + } + + $this->transaction = false; + $this->transactions = 0; + break; + + case 'rollback': + $result = $this->_sql_transaction('rollback'); + $this->transaction = false; + $this->transactions = 0; + break; + + default: + $result = $this->_sql_transaction($status); + break; + } + + return $result; + } + + /** + * Build sql statement from array for insert/update/select statements + * + * Idea for this from Ikonboard + * Possible query values: INSERT, INSERT_SELECT, UPDATE, SELECT, DELETE + * + */ + function sql_build_array($query, $assoc_ary = false) + { + if (!is_array($assoc_ary)) + { + return false; + } + + $fields = $values = array(); + + if ($query == 'INSERT' || $query == 'INSERT_SELECT') + { + foreach ($assoc_ary as $key => $var) + { + $fields[] = $key; + + if (is_array($var) && is_string($var[0])) + { + // This is used for INSERT_SELECT(s) + $values[] = $var[0]; + } + else + { + $values[] = $this->_sql_validate_value($var); + } + } + + $query = ($query == 'INSERT') ? ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')' : ' (' . implode(', ', $fields) . ') SELECT ' . implode(', ', $values) . ' '; + } + else if ($query == 'MULTI_INSERT') + { + trigger_error('The MULTI_INSERT query value is no longer supported. Please use sql_multi_insert() instead.', E_USER_ERROR); + } + else if ($query == 'UPDATE' || $query == 'SELECT' || $query == 'DELETE') + { + $values = array(); + foreach ($assoc_ary as $key => $var) + { + $values[] = "$key = " . $this->_sql_validate_value($var); + } + $query = implode(($query == 'UPDATE') ? ', ' : ' AND ', $values); + } + + return $query; + } + + /** + * Build IN or NOT IN sql comparison string, uses <> or = on single element + * arrays to improve comparison speed + * + * @access public + * @param string $field name of the sql column that shall be compared + * @param array $array array of values that are allowed (IN) or not allowed (NOT IN) + * @param bool $negate true for NOT IN (), false for IN () (default) + * @param bool $allow_empty_set If true, allow $array to be empty, this function will return 1=1 or 1=0 then. Default to false. + */ + function sql_in_set($field, $array, $negate = false, $allow_empty_set = false) + { + if (!sizeof($array)) + { + if (!$allow_empty_set) + { + // Print the backtrace to help identifying the location of the problematic code + $this->sql_error('No values specified for SQL IN comparison'); + } + else + { + // NOT IN () actually means everything so use a tautology + if ($negate) + { + return '1=1'; + } + // IN () actually means nothing so use a contradiction + else + { + return '1=0'; + } + } + } + + if (!is_array($array)) + { + $array = array($array); + } + + if (sizeof($array) == 1) + { + @reset($array); + $var = current($array); + + return $field . ($negate ? ' <> ' : ' = ') . $this->_sql_validate_value($var); + } + else + { + return $field . ($negate ? ' NOT IN ' : ' IN ') . '(' . implode(', ', array_map(array($this, '_sql_validate_value'), $array)) . ')'; + } + } + + /** + * Run binary AND operator on DB column. + * Results in sql statement: "{$column_name} & (1 << {$bit}) {$compare}" + * + * @param string $column_name The column name to use + * @param int $bit The value to use for the AND operator, will be converted to (1 << $bit). Is used by options, using the number schema... 0, 1, 2...29 + * @param string $compare Any custom SQL code after the check (for example "= 0") + */ + function sql_bit_and($column_name, $bit, $compare = '') + { + if (method_exists($this, '_sql_bit_and')) + { + return $this->_sql_bit_and($column_name, $bit, $compare); + } + + return $column_name . ' & ' . (1 << $bit) . (($compare) ? ' ' . $compare : ''); + } + + /** + * Run binary OR operator on DB column. + * Results in sql statement: "{$column_name} | (1 << {$bit}) {$compare}" + * + * @param string $column_name The column name to use + * @param int $bit The value to use for the OR operator, will be converted to (1 << $bit). Is used by options, using the number schema... 0, 1, 2...29 + * @param string $compare Any custom SQL code after the check (for example "= 0") + */ + function sql_bit_or($column_name, $bit, $compare = '') + { + if (method_exists($this, '_sql_bit_or')) + { + return $this->_sql_bit_or($column_name, $bit, $compare); + } + + return $column_name . ' | ' . (1 << $bit) . (($compare) ? ' ' . $compare : ''); + } + + /** + * Returns SQL string to cast a string expression to an int. + * + * @param string $expression An expression evaluating to string + * @return string Expression returning an int + */ + function cast_expr_to_bigint($expression) + { + return $expression; + } + + /** + * Returns SQL string to cast an integer expression to a string. + * + * @param string $expression An expression evaluating to int + * @return string Expression returning a string + */ + function cast_expr_to_string($expression) + { + return $expression; + } + + /** + * Run LOWER() on DB column of type text (i.e. neither varchar nor char). + * + * @param string $column_name The column name to use + * + * @return string A SQL statement like "LOWER($column_name)" + */ + function sql_lower_text($column_name) + { + return "LOWER($column_name)"; + } + + /** + * Run more than one insert statement. + * + * @param string $table table name to run the statements on + * @param array $sql_ary multi-dimensional array holding the statement data. + * + * @return bool false if no statements were executed. + * @access public + */ + function sql_multi_insert($table, $sql_ary) + { + if (!sizeof($sql_ary)) + { + return false; + } + + if ($this->multi_insert) + { + $ary = array(); + foreach ($sql_ary as $id => $_sql_ary) + { + // If by accident the sql array is only one-dimensional we build a normal insert statement + if (!is_array($_sql_ary)) + { + return $this->sql_query('INSERT INTO ' . $table . ' ' . $this->sql_build_array('INSERT', $sql_ary)); + } + + $values = array(); + foreach ($_sql_ary as $key => $var) + { + $values[] = $this->_sql_validate_value($var); + } + $ary[] = '(' . implode(', ', $values) . ')'; + } + + return $this->sql_query('INSERT INTO ' . $table . ' ' . ' (' . implode(', ', array_keys($sql_ary[0])) . ') VALUES ' . implode(', ', $ary)); + } + else + { + foreach ($sql_ary as $ary) + { + if (!is_array($ary)) + { + return false; + } + + $result = $this->sql_query('INSERT INTO ' . $table . ' ' . $this->sql_build_array('INSERT', $ary)); + + if (!$result) + { + return false; + } + } + } + + return true; + } + + /** + * Function for validating values + * @access private + */ + function _sql_validate_value($var) + { + if (is_null($var)) + { + return 'NULL'; + } + else if (is_string($var)) + { + return "'" . $this->sql_escape($var) . "'"; + } + else + { + return (is_bool($var)) ? intval($var) : $var; + } + } + + /** + * Build sql statement from array for select and select distinct statements + * + * Possible query values: SELECT, SELECT_DISTINCT + */ + function sql_build_query($query, $array) + { + $sql = ''; + switch ($query) + { + case 'SELECT': + case 'SELECT_DISTINCT'; + + $sql = str_replace('_', ' ', $query) . ' ' . $array['SELECT'] . ' FROM '; + + // Build table array. We also build an alias array for later checks. + $table_array = $aliases = array(); + $used_multi_alias = false; + + foreach ($array['FROM'] as $table_name => $alias) + { + if (is_array($alias)) + { + $used_multi_alias = true; + + foreach ($alias as $multi_alias) + { + $table_array[] = $table_name . ' ' . $multi_alias; + $aliases[] = $multi_alias; + } + } + else + { + $table_array[] = $table_name . ' ' . $alias; + $aliases[] = $alias; + } + } + + // We run the following code to determine if we need to re-order the table array. ;) + // The reason for this is that for multi-aliased tables (two equal tables) in the FROM statement the last table need to match the first comparison. + // DBMS who rely on this: Oracle, PostgreSQL and MSSQL. For all other DBMS it makes absolutely no difference in which order the table is. + if (!empty($array['LEFT_JOIN']) && sizeof($array['FROM']) > 1 && $used_multi_alias !== false) + { + // Take first LEFT JOIN + $join = current($array['LEFT_JOIN']); + + // Determine the table used there (even if there are more than one used, we only want to have one + preg_match('/(' . implode('|', $aliases) . ')\.[^\s]+/U', str_replace(array('(', ')', 'AND', 'OR', ' '), '', $join['ON']), $matches); + + // If there is a first join match, we need to make sure the table order is correct + if (!empty($matches[1])) + { + $first_join_match = trim($matches[1]); + $table_array = $last = array(); + + foreach ($array['FROM'] as $table_name => $alias) + { + if (is_array($alias)) + { + foreach ($alias as $multi_alias) + { + ($multi_alias === $first_join_match) ? $last[] = $table_name . ' ' . $multi_alias : $table_array[] = $table_name . ' ' . $multi_alias; + } + } + else + { + ($alias === $first_join_match) ? $last[] = $table_name . ' ' . $alias : $table_array[] = $table_name . ' ' . $alias; + } + } + + $table_array = array_merge($table_array, $last); + } + } + + $sql .= $this->_sql_custom_build('FROM', implode(' CROSS JOIN ', $table_array)); + + if (!empty($array['LEFT_JOIN'])) + { + foreach ($array['LEFT_JOIN'] as $join) + { + $sql .= ' LEFT JOIN ' . key($join['FROM']) . ' ' . current($join['FROM']) . ' ON (' . $join['ON'] . ')'; + } + } + + if (!empty($array['WHERE'])) + { + $sql .= ' WHERE ' . $this->_sql_custom_build('WHERE', $array['WHERE']); + } + + if (!empty($array['GROUP_BY'])) + { + $sql .= ' GROUP BY ' . $array['GROUP_BY']; + } + + if (!empty($array['ORDER_BY'])) + { + $sql .= ' ORDER BY ' . $array['ORDER_BY']; + } + + break; + } + + return $sql; + } + + /** + * display sql error page + */ + function sql_error($sql = '') + { + global $auth, $user, $config; + + // Set var to retrieve errored status + $this->sql_error_triggered = true; + $this->sql_error_sql = $sql; + + $this->sql_error_returned = $this->_sql_error(); + + if (!$this->return_on_error) + { + $message = 'SQL ERROR [ ' . $this->sql_layer . ' ]<br /><br />' . $this->sql_error_returned['message'] . ' [' . $this->sql_error_returned['code'] . ']'; + + // Show complete SQL error and path to administrators only + // Additionally show complete error on installation or if extended debug mode is enabled + // The DEBUG constant is for development only! + if ((isset($auth) && $auth->acl_get('a_')) || defined('IN_INSTALL') || defined('DEBUG')) + { + $message .= ($sql) ? '<br /><br />SQL<br /><br />' . htmlspecialchars($sql) : ''; + } + else + { + // If error occurs in initiating the session we need to use a pre-defined language string + // This could happen if the connection could not be established for example (then we are not able to grab the default language) + if (!isset($user->lang['SQL_ERROR_OCCURRED'])) + { + $message .= '<br /><br />An sql error occurred while fetching this page. Please contact an administrator if this problem persists.'; + } + else + { + if (!empty($config['board_contact'])) + { + $message .= '<br /><br />' . sprintf($user->lang['SQL_ERROR_OCCURRED'], '<a href="mailto:' . htmlspecialchars($config['board_contact']) . '">', '</a>'); + } + else + { + $message .= '<br /><br />' . sprintf($user->lang['SQL_ERROR_OCCURRED'], '', ''); + } + } + } + + if ($this->transaction) + { + $this->sql_transaction('rollback'); + } + + if (strlen($message) > 1024) + { + // We need to define $msg_long_text here to circumvent text stripping. + global $msg_long_text; + $msg_long_text = $message; + + trigger_error(false, E_USER_ERROR); + } + + trigger_error($message, E_USER_ERROR); + } + + if ($this->transaction) + { + $this->sql_transaction('rollback'); + } + + return $this->sql_error_returned; + } + + /** + * Explain queries + */ + function sql_report($mode, $query = '') + { + global $cache, $starttime, $phpbb_root_path, $phpbb_path_helper, $user; + global $request; + + if (is_object($request) && !$request->variable('explain', false)) + { + return false; + } + + if (!$query && $this->query_hold != '') + { + $query = $this->query_hold; + } + + switch ($mode) + { + case 'display': + if (!empty($cache)) + { + $cache->unload(); + } + $this->sql_close(); + + $mtime = explode(' ', microtime()); + $totaltime = $mtime[0] + $mtime[1] - $starttime; + + echo '<!DOCTYPE html> + <html dir="ltr"> + <head> + <meta charset="utf-8"> + <title>SQL Report</title> + <link href="' . htmlspecialchars($phpbb_path_helper->update_web_root_path($phpbb_root_path) . $phpbb_path_helper->get_adm_relative_path()) . 'style/admin.css" rel="stylesheet" type="text/css" media="screen" /> + </head> + <body id="errorpage"> + <div id="wrap"> + <div id="page-header"> + <a href="' . build_url('explain') . '">Return to previous page</a> + </div> + <div id="page-body"> + <div id="acp"> + <div class="panel"> + <span class="corners-top"><span></span></span> + <div id="content"> + <h1>SQL Report</h1> + <br /> + <p><b>Page generated in ' . round($totaltime, 4) . " seconds with {$this->num_queries['normal']} queries" . (($this->num_queries['cached']) ? " + {$this->num_queries['cached']} " . (($this->num_queries['cached'] == 1) ? 'query' : 'queries') . ' returning data from cache' : '') . '</b></p> + + <p>Time spent on ' . $this->sql_layer . ' queries: <b>' . round($this->sql_time, 5) . 's</b> | Time spent on PHP: <b>' . round($totaltime - $this->sql_time, 5) . 's</b></p> + + <br /><br /> + ' . $this->sql_report . ' + </div> + <span class="corners-bottom"><span></span></span> + </div> + </div> + </div> + <div id="page-footer"> + Powered by <a href="https://www.phpbb.com/">phpBB</a>® Forum Software © phpBB Group + </div> + </div> + </body> + </html>'; + + exit_handler(); + + break; + + case 'stop': + $endtime = explode(' ', microtime()); + $endtime = $endtime[0] + $endtime[1]; + + $this->sql_report .= ' + + <table cellspacing="1"> + <thead> + <tr> + <th>Query #' . $this->num_queries['total'] . '</th> + </tr> + </thead> + <tbody> + <tr> + <td class="row3"><textarea style="font-family:\'Courier New\',monospace;width:99%" rows="5" cols="10">' . preg_replace('/\t(AND|OR)(\W)/', "\$1\$2", htmlspecialchars(preg_replace('/[\s]*[\n\r\t]+[\n\r\s\t]*/', "\n", $query))) . '</textarea></td> + </tr> + </tbody> + </table> + + ' . $this->html_hold . ' + + <p style="text-align: center;"> + '; + + if ($this->query_result) + { + if (preg_match('/^(UPDATE|DELETE|REPLACE)/', $query)) + { + $this->sql_report .= 'Affected rows: <b>' . $this->sql_affectedrows($this->query_result) . '</b> | '; + } + $this->sql_report .= 'Before: ' . sprintf('%.5f', $this->curtime - $starttime) . 's | After: ' . sprintf('%.5f', $endtime - $starttime) . 's | Elapsed: <b>' . sprintf('%.5f', $endtime - $this->curtime) . 's</b>'; + } + else + { + $error = $this->sql_error(); + $this->sql_report .= '<b style="color: red">FAILED</b> - ' . $this->sql_layer . ' Error ' . $error['code'] . ': ' . htmlspecialchars($error['message']); + } + + $this->sql_report .= '</p><br /><br />'; + + $this->sql_time += $endtime - $this->curtime; + break; + + case 'start': + $this->query_hold = $query; + $this->html_hold = ''; + + $this->_sql_report($mode, $query); + + $this->curtime = explode(' ', microtime()); + $this->curtime = $this->curtime[0] + $this->curtime[1]; + + break; + + case 'add_select_row': + + $html_table = func_get_arg(2); + $row = func_get_arg(3); + + if (!$html_table && sizeof($row)) + { + $html_table = true; + $this->html_hold .= '<table cellspacing="1"><tr>'; + + foreach (array_keys($row) as $val) + { + $this->html_hold .= '<th>' . (($val) ? ucwords(str_replace('_', ' ', $val)) : ' ') . '</th>'; + } + $this->html_hold .= '</tr>'; + } + $this->html_hold .= '<tr>'; + + $class = 'row1'; + foreach (array_values($row) as $val) + { + $class = ($class == 'row1') ? 'row2' : 'row1'; + $this->html_hold .= '<td class="' . $class . '">' . (($val) ? $val : ' ') . '</td>'; + } + $this->html_hold .= '</tr>'; + + return $html_table; + + break; + + case 'fromcache': + + $this->_sql_report($mode, $query); + + break; + + case 'record_fromcache': + + $endtime = func_get_arg(2); + $splittime = func_get_arg(3); + + $time_cache = $endtime - $this->curtime; + $time_db = $splittime - $endtime; + $color = ($time_db > $time_cache) ? 'green' : 'red'; + + $this->sql_report .= '<table cellspacing="1"><thead><tr><th>Query results obtained from the cache</th></tr></thead><tbody><tr>'; + $this->sql_report .= '<td class="row3"><textarea style="font-family:\'Courier New\',monospace;width:99%" rows="5" cols="10">' . preg_replace('/\t(AND|OR)(\W)/', "\$1\$2", htmlspecialchars(preg_replace('/[\s]*[\n\r\t]+[\n\r\s\t]*/', "\n", $query))) . '</textarea></td></tr></tbody></table>'; + $this->sql_report .= '<p style="text-align: center;">'; + $this->sql_report .= 'Before: ' . sprintf('%.5f', $this->curtime - $starttime) . 's | After: ' . sprintf('%.5f', $endtime - $starttime) . 's | Elapsed [cache]: <b style="color: ' . $color . '">' . sprintf('%.5f', ($time_cache)) . 's</b> | Elapsed [db]: <b>' . sprintf('%.5f', $time_db) . 's</b></p><br /><br />'; + + // Pad the start time to not interfere with page timing + $starttime += $time_db; + + break; + + default: + + $this->_sql_report($mode, $query); + + break; + } + + return true; + } + + /** + * Gets the estimated number of rows in a specified table. + * + * @param string $table_name Table name + * + * @return string Number of rows in $table_name. + * Prefixed with ~ if estimated (otherwise exact). + * + * @access public + */ + function get_estimated_row_count($table_name) + { + return $this->get_row_count($table_name); + } + + /** + * Gets the exact number of rows in a specified table. + * + * @param string $table_name Table name + * + * @return string Exact number of rows in $table_name. + * + * @access public + */ + function get_row_count($table_name) + { + $sql = 'SELECT COUNT(*) AS rows_total + FROM ' . $this->sql_escape($table_name); + $result = $this->sql_query($sql); + $rows_total = $this->sql_fetchfield('rows_total'); + $this->sql_freeresult($result); + + return $rows_total; + } +} |