Current File : /home/admin/public_html/old/happyezystyle/board/Sources/Subs-Db-sqlite.php
<?php
/**********************************************************************************
* Subs-Db-sqlite.php *
***********************************************************************************
* SMF: Simple Machines Forum *
* Open-Source Project Inspired by Zef Hemel (zef@zefhemel.com) *
* =============================================================================== *
* Software Version: SMF 2.0 RC1 *
* Software by: Simple Machines (http://www.simplemachines.org) *
* Copyright 2006-2009 by: Simple Machines LLC (http://www.simplemachines.org) *
* 2001-2006 by: Lewis Media (http://www.lewismedia.com) *
* Support, News, Updates at: http://www.simplemachines.org *
***********************************************************************************
* This program is free software; you may redistribute it and/or modify it under *
* the terms of the provided license as published by Simple Machines LLC. *
* *
* This program is distributed in the hope that it is and will be useful, but *
* WITHOUT ANY WARRANTIES; without even any implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. *
* *
* See the "license.txt" file for details of the Simple Machines license. *
* The latest version can always be found at http://www.simplemachines.org. *
**********************************************************************************/
if (!defined('SMF'))
die('Hacking attempt...');
/* This file has all the main functions in it that relate to the database.
// !!!
*/
// Initialize the database settings
function smf_db_initiate($db_server, $db_name, $db_user, $db_passwd, $db_prefix, $db_options = array())
{
global $smcFunc, $mysql_set_mode, $db_in_transact, $sqlite_error;
// Map some database specific functions, only do this once.
if (!isset($smcFunc['db_fetch_assoc']) || $smcFunc['db_fetch_assoc'] != 'sqlite_fetch_array')
$smcFunc += array(
'db_query' => 'smf_db_query',
'db_quote' => 'smf_db_quote',
'db_fetch_assoc' => 'sqlite_fetch_array',
'db_fetch_row' => 'smf_db_fetch_row',
'db_free_result' => 'smf_db_free_result',
'db_insert' => 'smf_db_insert',
'db_insert_id' => 'smf_db_insert_id',
'db_num_rows' => 'sqlite_num_rows',
'db_data_seek' => 'sqlite_seek',
'db_num_fields' => 'sqlite_num_fields',
'db_escape_string' => 'sqlite_escape_string',
'db_unescape_string' => 'smf_db_unescape_string',
'db_server_info' => 'smf_db_libversion',
'db_affected_rows' => 'smf_db_affected_rows',
'db_transaction' => 'smf_db_transaction',
'db_error' => 'smf_db_last_error',
'db_select_db' => '',
'db_title' => 'SQLite',
'db_sybase' => true,
'db_case_sensitive' => true,
'db_escape_wildcard_string' => 'smf_db_escape_wildcard_string',
);
if (substr($db_name, -3) != '.db')
$db_name .= '.db';
if (!empty($db_options['persist']))
$connection = @sqlite_popen($db_name, 0666, $sqlite_error);
else
$connection = @sqlite_open($db_name, 0666, $sqlite_error);
// Something's wrong, show an error if its fatal (which we assume it is)
if (!$connection)
{
if (!empty($db_options['non_fatal']))
return null;
else
db_fatal_error();
}
$db_in_transact = false;
// This is frankly stupid - stop SQLite returning alias names!
@sqlite_query('PRAGMA short_column_names = 1', $connection);
// Make some user defined functions!
sqlite_create_function($connection, 'unix_timestamp', 'smf_udf_unix_timestamp', 0);
sqlite_create_function($connection, 'inet_aton', 'smf_udf_inet_aton', 1);
sqlite_create_function($connection, 'inet_ntoa', 'smf_udf_inet_ntoa', 1);
sqlite_create_function($connection, 'find_in_set', 'smf_udf_find_in_set', 2);
sqlite_create_function($connection, 'year', 'smf_udf_year', 1);
sqlite_create_function($connection, 'month', 'smf_udf_month', 1);
sqlite_create_function($connection, 'dayofmonth', 'smf_udf_dayofmonth', 1);
sqlite_create_function($connection, 'concat', 'smf_udf_concat');
sqlite_create_function($connection, 'locate', 'smf_udf_locate', 2);
sqlite_create_function($connection, 'regexp', 'smf_udf_regexp', 2);
return $connection;
}
// Extend the database functionality.
function db_extend($type = 'extra')
{
global $sourcedir, $db_type;
require_once($sourcedir . '/Db' . strtoupper($type{0}) . substr($type, 1) . '-' . $db_type . '.php');
$initFunc = 'db_' . $type . '_init';
$initFunc();
}
// SQLite doesn't actually need this!
function db_fix_prefix(&$db_prefix, $db_name)
{
return false;
}
function smf_db_replacement__callback($matches)
{
global $db_callback, $user_info, $db_prefix;
list ($values, $connection) = $db_callback;
if ($matches[1] === 'db_prefix')
return $db_prefix;
if ($matches[1] === 'query_see_board')
return $user_info['query_see_board'];
if ($matches[1] === 'query_wanna_see_board')
return $user_info['query_wanna_see_board'];
if (!isset($matches[2]))
smf_db_error_backtrace('Invalid value inserted or no type specified.', '', E_USER_ERROR, __FILE__, __LINE__);
if (!isset($values[$matches[2]]))
smf_db_error_backtrace('The database value you\'re trying to insert does not exist: ' . htmlspecialchars($matches[2]), '', E_USER_ERROR, __FILE__, __LINE__);
$replacement = $values[$matches[2]];
switch ($matches[1])
{
case 'int':
if (!is_numeric($replacement) || (string) $replacement !== (string) (int) $replacement)
smf_db_error_backtrace('Wrong value type sent to the database. Integer expected. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);
return (string) (int) $replacement;
break;
case 'string':
case 'text':
return sprintf('\'%1$s\'', sqlite_escape_string($replacement));
break;
case 'array_int':
if (is_array($replacement))
{
if (empty($replacement))
smf_db_error_backtrace('Database error, given array of integer values is empty. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);
foreach ($replacement as $key => $value)
{
if (!is_numeric($value) || (string) $value !== (string) (int) $value)
smf_db_error_backtrace('Wrong value type sent to the database. Array of integers expected. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);
$replacement[$key] = (string) (int) $value;
}
return implode(', ', $replacement);
}
else
smf_db_error_backtrace('Wrong value type sent to the database. Array of integers expected. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);
break;
case 'array_string':
if (is_array($replacement))
{
if (empty($replacement))
smf_db_error_backtrace('Database error, given array of string values is empty. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);
foreach ($replacement as $key => $value)
$replacement[$key] = sprintf('\'%1$s\'', sqlite_escape_string($value));
return implode(', ', $replacement);
}
else
smf_db_error_backtrace('Wrong value type sent to the database. Array of strings expected. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);
break;
case 'date':
if (preg_match('~^(\d{4})-([0-1]?\d)-([0-3]?\d)$~', $replacement, $date_matches) === 1)
return sprintf('\'%04d-%02d-%02d\'', $date_matches[1], $date_matches[2], $date_matches[3]);
else
smf_db_error_backtrace('Wrong value type sent to the database. Date expected. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);
break;
case 'float':
if (!is_numeric($replacement))
smf_db_error_backtrace('Wrong value type sent to the database. Floating point number expected. (' . $matches[2] . ')', '', E_USER_ERROR, __FILE__, __LINE__);
return (string) (float) $replacement;
break;
case 'identifier':
return '`' . strtr($replacement, array('`' => '', '.' => '')) . '`';
break;
case 'raw':
return $replacement;
break;
default:
smf_db_error_backtrace('Undefined type used in the database query. (' . $matches[2] . ')', '', false, __FILE__, __LINE__);
break;
}
}
// Just like the db_query, escape and quote a string, but not executing the query.
function smf_db_quote($db_string, $db_values, $connection = null)
{
global $db_callback, $db_connection;
// Only bother if there's something to replace.
if (strpos($db_string, '{') !== false)
{
// This is needed by the callback function.
$db_callback = array($db_values, $connection == null ? $db_connection : $connection);
// Do the quoting and escaping
$db_string = preg_replace_callback('~{([a-z_]+)(?::([a-zA-Z0-9_-]+))?}~', 'smf_db_replacement__callback', $db_string);
// Clear this global variable.
$db_callback = array();
}
return $db_string;
}
// Do a query. Takes care of errors too.
function smf_db_query($identifier, $db_string, $db_values = array(), $connection = null)
{
global $db_cache, $db_count, $db_connection, $db_show_debug;
global $db_unbuffered, $db_callback, $modSettings;
// Decide which connection to use.
$connection = $connection == null ? $db_connection : $connection;
// Special queries that need processing.
$replacements = array(
'birthday_array' => array(
'~DATE_FORMAT\(([^,]+),\s*([^\)]+)\s*\)~' => 'strftime($2, $1)'
),
'substring' => array(
'~SUBSTRING~' => 'SUBSTR',
),
'truncate_table' => array(
'~TRUNCATE~i' => 'DELETE FROM',
),
'user_activity_by_time' => array(
'~HOUR\(FROM_UNIXTIME\((poster_time\s+\+\s+\{int:.+\})\)\)~' => 'strftime(\'%H\', datetime($1, \'unixepoch\'))',
),
'unread_fetch_topic_count' => array(
'~\s*SELECT\sCOUNT\(DISTINCT\st\.id_topic\),\sMIN\(t\.id_last_msg\)(.+)$~is' => 'SELECT COUNT(id_topic), MIN(id_last_msg) FROM (SELECT DISTINCT t.id_topic, t.id_last_msg $1)',
),
'alter_table_boards' => array(
'~(.+)~' => '',
),
'get_random_number' => array(
'~RAND~' => 'RANDOM',
),
'set_character_set' => array(
'~(.+)~' => '',
),
'themes_count' => array(
'~\s*SELECT\sCOUNT\(DISTINCT\sid_member\)\sAS\svalue,\sid_theme.+FROM\s(.+themes)(.+)~is' => 'SELECT COUNT(id_member) AS value, id_theme FROM (SELECT DISTINCT id_member, id_theme FROM $1) $2',
),
'attach_download_increase' => array(
'~LOW_PRIORITY~' => '',
),
'pm_conversation_list' => array(
'~ORDER BY id_pm~' => 'ORDER BY MAX(pm.id_pm)',
),
);
if (isset($replacements[$identifier]))
$db_string = preg_replace(array_keys($replacements[$identifier]), array_values($replacements[$identifier]), $db_string);
// SQLite doesn't support count(distinct).
$db_string = trim($db_string);
$db_string = preg_replace('~^\s*SELECT\s+?COUNT\(DISTINCT\s+?(.+?)\)(\s*AS\s*(.+?))*\s*(FROM.+)~is', 'SELECT COUNT(*) $2 FROM (SELECT DISTINCT $1 $4)', $db_string);
// Or RLIKE.
$db_string = preg_replace('~AND\s*(.+?)\s*RLIKE\s*(\{string:.+?\})~', 'AND REGEXP(\1, \2)', $db_string);
// INSTR? No support for that buddy :(
if (preg_match('~INSTR\((.+?),\s(.+?)\)~', $db_string, $matches) === 1)
{
$db_string = preg_replace('~INSTR\((.+?),\s(.+?)\)~', '$1 LIKE $2', $db_string);
list(, $search) = explode(':', substr($matches[2], 1, -1));
$db_values[$search] = '%' . $db_values[$search] . '%';
}
// Lets remove ASC and DESC from GROUP BY clause.
if (preg_match('~GROUP BY .*? (?:ASC|DESC)~is', $db_string, $matches))
{
$replace = str_replace(array('ASC', 'DESC'), '', $matches[0]);
$db_string = str_replace($matches[0], $replace, $db_string);
}
// We need to replace the SUBSTRING in the sort identifier.
if ($identifier == 'substring_membergroups' && isset($db_values['sort']))
$db_values['sort'] = preg_replace('~SUBSTRING~', 'SUBSTR', $db_values['sort']);
// SQLite doesn't support TO_DAYS but has the julianday function which can be used in the same manner. But make sure it is being used to calculate a span.
$db_string = preg_replace('~\(TO_DAYS\(([^)]+)\) - TO_DAYS\(([^)]+)\)\) AS span~', '(julianday($1) - julianday($2)) AS span', $db_string);
// One more query....
$db_count = !isset($db_count) ? 1 : $db_count + 1;
// Overriding security? This is evil!
$security_override = $db_values === 'security_override' || !empty($db_values['security_override']);
if (empty($modSettings['disableQueryCheck']) && strpos($db_string, '\'') !== false && !$security_override)
smf_db_error_backtrace('Hacking attempt...', 'Illegal character (\') used in query...', true, __FILE__, __LINE__);
if (!$security_override && (!empty($db_values) || strpos($db_string, '{db_prefix}') !== false))
{
// Pass some values to the global space for use in the callback function.
$db_callback = array($db_values, $connection);
// Inject the values passed to this function.
$db_string = preg_replace_callback('~{([a-z_]+)(?::([a-zA-Z0-9_-]+))?}~', 'smf_db_replacement__callback', $db_string);
// This shouldn't be residing in global space any longer.
$db_callback = array();
}
// Debugging.
if (isset($db_show_debug) && $db_show_debug === true)
{
// Get the file and line number this function was called.
list ($file, $line) = smf_db_error_backtrace('', '', 'return', __FILE__, __LINE__);
// Initialize $db_cache if not already initialized.
if (!isset($db_cache))
$db_cache = array();
if (!empty($_SESSION['debug_redirect']))
{
$db_cache = array_merge($_SESSION['debug_redirect'], $db_cache);
$db_count = count($db_cache) + 1;
$_SESSION['debug_redirect'] = array();
}
// Don't overload it.
$db_cache[$db_count]['q'] = $db_count < 50 ? $db_string : '...';
$db_cache[$db_count]['f'] = $file;
$db_cache[$db_count]['l'] = $line;
$st = microtime();
}
$ret = @sqlite_query($db_string, $connection, SQLITE_BOTH, $err_msg);
if ($ret === false && empty($db_values['db_error_skip']))
$ret = smf_db_error($db_string . '#!#' . $err_msg, $connection);
// Debugging.
if (isset($db_show_debug) && $db_show_debug === true)
$db_cache[$db_count]['t'] = array_sum(explode(' ', microtime())) - array_sum(explode(' ', $st));
return $ret;
}
function smf_db_affected_rows($connection = null)
{
global $db_connection;
return sqlite_changes($connection == null ? $db_connection : $connection);
}
function smf_db_insert_id($table, $field = null, $connection = null)
{
global $db_connection, $db_prefix;
$table = str_replace('{db_prefix}', $db_prefix, $table);
// SQLite doesn't need the table or field information.
return sqlite_last_insert_rowid($connection == null ? $db_connection : $connection);
}
// Keeps the connection handle.
function smf_db_last_error()
{
global $db_connection, $sqlite_error;
$query_errno = sqlite_last_error($db_connection);
return $query_errno || empty($sqlite_error) ? sqlite_error_string($query_errno) : $sqlite_error;
}
// Do a transaction.
function smf_db_transaction($type = 'commit', $connection = null)
{
global $db_connection, $db_in_transact;
// Decide which connection to use
$connection = $connection == null ? $db_connection : $connection;
if ($type == 'begin')
{
$db_in_transact = true;
return @sqlite_query('BEGIN', $connection);
}
elseif ($type == 'rollback')
{
$db_in_transact = false;
return @sqlite_query('ROLLBACK', $connection);
}
elseif ($type == 'commit')
{
$db_in_transact = false;
return @sqlite_query('COMMIT', $connection);
}
return false;
}
// Database error!
function smf_db_error($db_string, $connection = null)
{
global $txt, $context, $sourcedir, $webmaster_email, $modSettings;
global $forum_version, $db_connection, $db_last_error, $db_persist;
global $db_server, $db_user, $db_passwd, $db_name, $db_show_debug, $ssi_db_user, $ssi_db_passwd;
global $smcFunc;
// We'll try recovering the file and line number the original db query was called from.
list ($file, $line) = smf_db_error_backtrace('', '', 'return', __FILE__, __LINE__);
// Decide which connection to use
$connection = $connection == null ? $db_connection : $connection;
// This is the error message...
$query_errno = sqlite_last_error($connection);
$query_error = sqlite_error_string($query_errno);
// Get the extra error message.
$errStart = strrpos($db_string, '#!#');
$query_error .= '<br />' . substr($db_string, $errStart + 3);
$db_string = substr($db_string, 0, $errStart);
// Log the error.
if (function_exists('log_error'))
log_error($txt['database_error'] . ': ' . $query_error . (!empty($modSettings['enableErrorQueryLogging']) ? "\n\n" .$db_string : ''), 'database', $file, $line);
// Nothing's defined yet... just die with it.
if (empty($context) || empty($txt))
die($query_error);
// Show an error message, if possible.
$context['error_title'] = $txt['database_error'];
if (allowedTo('admin_forum'))
$context['error_message'] = nl2br($query_error) . '<br />' . $txt['file'] . ': ' . $file . '<br />' . $txt['line'] . ': ' . $line;
else
$context['error_message'] = $txt['try_again'];
// A database error is often the sign of a database in need of updgrade. Check forum versions, and if not identical suggest an upgrade... (not for Demo/CVS versions!)
if (allowedTo('admin_forum') && !empty($forum_version) && $forum_version != 'SMF ' . @$modSettings['smfVersion'] && strpos($forum_version, 'Demo') === false && strpos($forum_version, 'CVS') === false)
$context['error_message'] .= '<br /><br />' . sprintf($txt['database_error_versions'], $forum_version, $modSettings['smfVersion']);
if (allowedTo('admin_forum') && isset($db_show_debug) && $db_show_debug === true)
{
$context['error_message'] .= '<br /><br />' . nl2br($db_string);
}
// It's already been logged... don't log it again.
fatal_error($context['error_message'], false);
}
// Insert some data...
function smf_db_insert($method = 'replace', $table, $columns, $data, $keys, $disable_trans = false, $connection = null)
{
global $db_in_transact, $db_connection, $smcFunc, $db_prefix;
$connection = $connection === null ? $db_connection : $connection;
if (empty($data))
return;
if (!is_array($data[array_rand($data)]))
$data = array($data);
// Replace the prefix holder with the actual prefix.
$table = str_replace('{db_prefix}', $db_prefix, $table);
$priv_trans = false;
if (count($data) > 1 && !$db_in_transact && !$disable_trans)
{
$smcFunc['db_transaction']('begin', $connection);
$priv_trans = true;
}
// SQLite doesn't support replace or insert ignore so we need to work around it.
if ($method == 'replace')
{
// Setup an UPDATE template.
$updateData = '';
$where = '';
$count = 0;
foreach ($columns as $columnName => $type)
{
// Are we restricting the length?
if (strpos($type, 'string-') !== false)
$actualType = sprintf($columnName . ' = SUBSTR({string:%1$s}, 1, ' . substr($type, 7) . '), ', $count);
else
$actualType = sprintf($columnName . ' = {%1$s:%2$s}, ', $type, $count);
// If it's a key we don't actally update it.
if (in_array($columnName, $keys))
$where .= (empty($where) ? '' : ' AND ') . substr($actualType, 0, -2);
else
$updateData .= $actualType;
$count++;
}
$updateData = substr($updateData, 0, -2);
// Try and update the entries.
if (!empty($updateData))
foreach ($data as $k => $entry)
{
$smcFunc['db_query']('', '
UPDATE ' . $table . '
SET ' . $updateData . '
' . (empty($where) ? '' : ' WHERE ' . $where),
$entry, $connection
);
// Make a note that the replace actually overwrote.
if ($smcFunc['db_affected_rows']() != 0)
unset($data[$k]);
}
}
if (!empty($data))
{
// Create the mold for a single row insert.
$insertData = '(';
foreach ($columns as $columnName => $type)
{
// Are we restricting the length?
if (strpos($type, 'string-') !== false)
$insertData .= sprintf('SUBSTR({string:%1$s}, 1, ' . substr($type, 7) . '), ', $columnName);
else
$insertData .= sprintf('{%1$s:%2$s}, ', $type, $columnName);
}
$insertData = substr($insertData, 0, -2) . ')';
// Create an array consisting of only the columns.
$indexed_columns = array_keys($columns);
// Here's where the variables are injected to the query.
$insertRows = array();
foreach ($data as $dataRow)
$insertRows[] = smf_db_quote($insertData, array_combine($indexed_columns, $dataRow), $connection);
foreach ($insertRows as $entry)
// Do the insert.
$smcFunc['db_query']('', '
INSERT' . ($method === 'ignore' ? ' OR IGNORE' : '') . ' INTO ' . $table . '(' . implode(', ', $indexed_columns) . ')
VALUES
' . $entry,
array(
'security_override' => true,
'db_error_skip' => true,
),
$connection
);
}
if ($priv_trans)
$smcFunc['db_transaction']('commit', $connection);
}
// Doesn't do anything on sqlite!
function smf_db_free_result($handle = false)
{
return true;
}
// Make sure we return no string indexes!
function smf_db_fetch_row($handle)
{
return sqlite_fetch_array($handle, SQLITE_NUM);
}
// Unescape an escaped string!
function smf_db_unescape_string($string)
{
return strtr($string, array('\'\'' => '\''));
}
// This function tries to work out additional error information from a back trace.
function smf_db_error_backtrace($error_message, $log_message = '', $error_type = false, $file = null, $line = null)
{
if (empty($log_message))
$log_message = $error_message;
if (function_exists('debug_backtrace'))
{
foreach (debug_backtrace() as $step)
{
// Found it?
if (strpos($step['function'], 'query') === false && !in_array(substr($step['function'], 0, 7), array('smf_db_', 'preg_re', 'db_erro')))
{
$log_message .= '<br />Function: ' . $step['function'];
break;
}
if (isset($step['line']))
{
$file = $step['file'];
$line = $step['line'];
}
}
}
// A special case - we want the file and line numbers for debugging.
if ($error_type == 'return')
return array($file, $line);
// Is always a critical error.
if (function_exists('log_error'))
log_error($log_message, 'critical', $file, $line);
if (function_exists('fatal_error'))
{
fatal_error($error_message, $error_type);
// Cannot continue...
exit;
}
elseif ($error_type)
trigger_error($error_message . ($line !== null ? '<i>(' . basename($file) . '-' . $line . ')</i>' : ''), $error_type);
else
trigger_error($error_message . ($line !== null ? '<i>(' . basename($file) . '-' . $line . ')</i>' : ''));
}
// Emulate UNIX_TIMESTAMP.
function smf_udf_unix_timestamp()
{
return strftime('%s', 'now');
}
// Emulate INET_ATON.
function smf_udf_inet_aton($ip)
{
$chunks = explode('.', $ip);
return @$chunks[0] * pow(256, 3) + @$chunks[1] * pow(256, 2) + @$chunks[2] * 256 + @$chunks[3];
}
// Emulate INET_NTOA.
function smf_udf_inet_ntoa($n)
{
$t = array(0, 0, 0, 0);
$msk = 16777216.0;
$n += 0.0;
if ($n < 1)
return '0.0.0.0';
for ($i = 0; $i < 4; $i++)
{
$k = (int) ($n / $msk);
$n -= $msk * $k;
$t[$i]= $k;
$msk /= 256.0;
};
$a = join('.', $t);
return $a;
}
// Emulate FIND_IN_SET.
function smf_udf_find_in_set($find, $groups)
{
foreach (explode(',', $groups) as $group)
{
if ($group == $find)
return true;
}
return false;
}
// Emulate YEAR.
function smf_udf_year($date)
{
return substr($date, 0, 4);
}
// Emulate MONTH.
function smf_udf_month($date)
{
return substr($date, 5, 2);
}
// Emulate DAYOFMONTH.
function smf_udf_dayofmonth($date)
{
return substr($date, 8, 2);
}
// We need this since sqlite_libversion() doesn't take any parameters.
function smf_db_libversion($void = null)
{
return sqlite_libversion();
}
// This function uses variable argument lists so that it can handle more then two parameters.
// Emulates the CONCAT function.
function smf_udf_concat()
{
// Since we didn't specify any arguments we must get them from PHP.
$args = func_get_args();
// It really doesn't matter if there were 0 to 100 arguments, just slap them all together.
return implode('', $args);
}
// We need to use PHP to locate the position in the string.
function smf_udf_locate($find, $string)
{
return strpos($string, $find);
}
// This is used to replace RLIKE.
function smf_udf_regexp($exp, $search)
{
if (preg_match($exp, $match))
return 1;
return 0;
}
// Escape the LIKE wildcards so that they match the character and not the wildcard.
// The optional second parameter turns human readable wildcards into SQL wildcards.
function smf_db_escape_wildcard_string($string, $translate_human_wildcards=false)
{
$replacements = array(
'%' => '\%',
'\\' => '\\\\',
);
if ($translate_human_wildcards)
$replacements += array(
'*' => '%',
);
return strtr($string, $replacements);
}
?>