282 lines
7.1 KiB
PHP
282 lines
7.1 KiB
PHP
<?php
|
|
// $Id$
|
|
|
|
/**
|
|
* @file
|
|
* Database interface code for database servers using PEAR, including PostgreSQL.
|
|
*/
|
|
|
|
require_once 'DB.php';
|
|
|
|
/**
|
|
* Initialize a database connection.
|
|
*/
|
|
function db_connect($url) {
|
|
$db_handle = DB::connect($url);
|
|
|
|
if (DB::isError($db_handle)) {
|
|
die('Database problem: '. $db_handle->getMessage());
|
|
}
|
|
|
|
$db_handle->setFetchMode(DB_FETCHMODE_ASSOC);
|
|
|
|
return $db_handle;
|
|
}
|
|
|
|
/**
|
|
* Runs a basic query in the active database.
|
|
*
|
|
* User-supplied arguments to the query should be passed in as separate parameters
|
|
* so that they can be properly escaped to avoid SQL injection attacks.
|
|
*
|
|
* @param $query
|
|
* A string containing an SQL query.
|
|
* @param ...
|
|
* A variable number of arguments which are substituted into the query using
|
|
* printf() syntax.
|
|
* @return
|
|
* A database query result resource, or FALSE if the query was not executed
|
|
* correctly.
|
|
*/
|
|
function db_query($query) {
|
|
|
|
$args = func_get_args();
|
|
|
|
$query = db_prefix_tables($query);
|
|
if (count($args) > 1) {
|
|
if(is_array($args[1])){
|
|
$args1 = array_map('check_query', $args[1]);
|
|
$nargs = array_merge(array($query), $args1);
|
|
}
|
|
else {
|
|
$nargs = array_map('check_query', $args);
|
|
$nargs[0] = $query;
|
|
}
|
|
return _db_query(call_user_func_array('sprintf', $nargs));
|
|
}
|
|
else {
|
|
return _db_query($query);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Debugging version of db_query().
|
|
*
|
|
* Echoes the query to the browser.
|
|
*/
|
|
function db_queryd($query) {
|
|
$args = func_get_args();
|
|
$query = db_prefix_tables($query);
|
|
if (count($args) > 1) {
|
|
if(is_array($args[1])){
|
|
$args1 = array_map('check_query', $args[1]);
|
|
$nargs = array_merge(array($query), $args1);
|
|
}
|
|
else {
|
|
$nargs = array_map('check_query', $args);
|
|
$nargs[0] = $query;
|
|
}
|
|
return _db_query(call_user_func_array('sprintf', $nargs), 1);
|
|
}
|
|
else {
|
|
return _db_query($query, 1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper function for db_query().
|
|
*/
|
|
function _db_query($query, $debug = 0) {
|
|
global $active_db, $queries;
|
|
|
|
if (variable_get('dev_query', 0)) {
|
|
list($usec, $sec) = explode(' ', microtime());
|
|
$timer = (float)$usec + (float)$sec;
|
|
}
|
|
|
|
$result = $active_db->query($query);
|
|
|
|
if (variable_get('dev_query', 0)) {
|
|
list($usec, $sec) = explode(' ', microtime());
|
|
$stop = (float)$usec + (float)$sec;
|
|
$diff = $stop - $timer;
|
|
$queries[] = array($query, $diff);
|
|
}
|
|
|
|
if ($debug) {
|
|
print '<p>query: '. $query .'</p>';
|
|
}
|
|
|
|
if (DB::isError($result)) {
|
|
trigger_error($result->getMessage() ."\nquery: ". htmlspecialchars($query), E_USER_ERROR);
|
|
}
|
|
else {
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch one result row from the previous query as an object.
|
|
*
|
|
* @param $result
|
|
* A database query result resource, as returned from db_query().
|
|
* @return
|
|
* An object representing the next row of the result. The attributes of this
|
|
* object are the table fields selected by the query.
|
|
*/
|
|
function db_fetch_object($result) {
|
|
if ($result) {
|
|
return $result->fetchRow(DB_FETCHMODE_OBJECT);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch one result row from the previous query as an array.
|
|
*
|
|
* @param $result
|
|
* A database query result resource, as returned from db_query().
|
|
* @return
|
|
* An associative array representing the next row of the result. The keys of
|
|
* this object are the names of the table fields selected by the query, and
|
|
* the values are the field values for this result row.
|
|
*/
|
|
function db_fetch_array($result) {
|
|
if ($result) {
|
|
return $result->fetchRow(DB_FETCHMODE_ASSOC);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determine how many result rows were found by the preceding query.
|
|
*
|
|
* @param $result
|
|
* A database query result resource, as returned from db_query().
|
|
* @return
|
|
* The number of result rows.
|
|
*/
|
|
function db_num_rows($result) {
|
|
if ($result) {
|
|
return $result->numRows($result);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return an individual result field from the previous query.
|
|
*
|
|
* Only use this function if exactly one field is being selected; otherwise,
|
|
* use db_fetch_object() or db_fetch_array().
|
|
*
|
|
* @param $result
|
|
* A database query result resource, as returned from db_query().
|
|
* @param $row
|
|
* The index of the row whose result is needed.
|
|
* @return
|
|
* The resulting field.
|
|
*/
|
|
function db_result($result, $row = 0) {
|
|
if ($result && $result->numRows($result) > $row) {
|
|
$tmp = $result->fetchRow(DB_FETCHMODE_ORDERED);
|
|
return $tmp[$row];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determine whether the previous query caused an error.
|
|
*/
|
|
function db_error() {
|
|
global $active_db;
|
|
|
|
return DB::isError($active_db);
|
|
}
|
|
|
|
/**
|
|
* Return a new unique ID in the given sequence.
|
|
*
|
|
* For compatibility reasons, Drupal does not use auto-numbered fields in its
|
|
* database tables. Instead, this function is used to return a new unique ID
|
|
* of the type requested. If necessary, a new sequence with the given name
|
|
* will be created.
|
|
*/
|
|
function db_next_id($name) {
|
|
global $active_db;
|
|
|
|
$name = db_prefix_tables($name);
|
|
$result = $active_db->nextID($name);
|
|
if (DB::isError($result)) {
|
|
watchdog('error', t('Database: %db sequence table: %name.', array('%db' => '<em>'. $result->getMessage() .'</em>', '%name' => "<em>$name</em>")));
|
|
}
|
|
else {
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determine the number of rows changed by the preceding query.
|
|
*/
|
|
function db_affected_rows() {
|
|
global $active_db;
|
|
|
|
return $active_db->affectedRows();
|
|
}
|
|
|
|
/**
|
|
* Runs a limited-range query in the active database.
|
|
*
|
|
* Use this as a substitute for db_query() when a subset of the query is to be
|
|
* returned.
|
|
* User-supplied arguments to the query should be passed in as separate parameters
|
|
* so that they can be properly escaped to avoid SQL injection attacks.
|
|
*
|
|
* @param $query
|
|
* A string containing an SQL query.
|
|
* @param ...
|
|
* A variable number of arguments which are substituted into the query using
|
|
* printf() syntax.
|
|
* @param $from
|
|
* The first result row to return.
|
|
* @param $count
|
|
* The maximum number of result rows to return.
|
|
* @return
|
|
* A database query result resource, or FALSE if the query was not executed
|
|
* correctly.
|
|
*/
|
|
function db_query_range($query) {
|
|
global $active_db, $queries;
|
|
|
|
if (variable_get('dev_query', 0)) {
|
|
list($usec, $sec) = explode(' ', microtime());
|
|
$timer = (float)$usec + (float)$sec;
|
|
}
|
|
|
|
$args = func_get_args();
|
|
$count = array_pop($args);
|
|
$from = array_pop($args);
|
|
if (count(func_get_args()) > 3) {
|
|
$args = array_map('check_query', $args);
|
|
$query = db_prefix_tables($query);
|
|
$args[0] = $query;
|
|
$result = $active_db->limitQuery(call_user_func_array('sprintf', $args), $from, $count);
|
|
}
|
|
else {
|
|
$query = func_get_arg(0);
|
|
$query = db_prefix_tables($query);
|
|
$result = $active_db->limitQuery( $query, $from, $count);
|
|
}
|
|
|
|
if (variable_get('dev_query', 0)) {
|
|
list($usec, $sec) = explode(' ', microtime());
|
|
$stop = (float)$usec + (float)$sec;
|
|
$diff = $stop - $timer;
|
|
$queries[] = array($query. ' [LIMIT '. $from .', '. $count .']', $diff);
|
|
}
|
|
|
|
if (DB::isError($result)) {
|
|
watchdog('error', t('Database: %db query: %query.', array('%db' => '<em>'. $result->getMessage() .'</em>', '%query' => '<em>'. htmlspecialchars($query) .'</em>')));
|
|
}
|
|
else {
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
?>
|