class wpdb {
- var $show_errors = true;
- var $num_queries = 0;
+ var $show_errors = false;
+ var $num_queries = 0;
var $last_query;
var $col_info;
var $queries;
+ var $ready = false;
// Our tables
var $posts;
var $post2cat;
var $comments;
var $links;
- var $linkcategories;
var $options;
var $optiontypes;
var $optionvalues;
var $optiongroups;
var $optiongroup_options;
var $postmeta;
-
- // ==================================================================
- // DB Constructor - connects to the server and selects a database
-
+ var $usermeta;
+ var $terms;
+ var $term_taxonomy;
+ var $term_relationships;
+
+ var $charset;
+ var $collate;
+
+ /**
+ * Connects to the database server and selects a database
+ * @param string $dbuser
+ * @param string $dbpassword
+ * @param string $dbname
+ * @param string $dbhost
+ */
function wpdb($dbuser, $dbpassword, $dbname, $dbhost) {
return $this->__construct($dbuser, $dbpassword, $dbname, $dbhost);
}
-
+
function __construct($dbuser, $dbpassword, $dbname, $dbhost) {
register_shutdown_function(array(&$this, "__destruct"));
+ if ( defined('WP_DEBUG') and WP_DEBUG == true )
+ $this->show_errors();
+
+ if ( defined('DB_CHARSET') )
+ $this->charset = DB_CHARSET;
+
+ if ( defined('DB_COLLATE') )
+ $this->collate = DB_COLLATE;
+
$this->dbh = @mysql_connect($dbhost, $dbuser, $dbpassword);
if (!$this->dbh) {
$this->bail("
</ul>
<p>If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href='http://wordpress.org/support/'>WordPress Support Forums</a>.</p>
");
+ return;
}
+ $this->ready = true;
+
+ if ( !empty($this->charset) && version_compare(mysql_get_server_info(), '4.1.0', '>=') )
+ $this->query("SET NAMES '$this->charset'");
+
$this->select($dbname);
}
function __destruct() {
- return true;
+ return true;
}
- // ==================================================================
- // Select a DB (if another one needs to be selected)
-
+ /**
+ * Selects a database using the current class's $this->dbh
+ * @param string $db name
+ */
function select($db) {
if (!@mysql_select_db($db, $this->dbh)) {
+ $this->ready = false;
$this->bail("
<h1>Can’t select database</h1>
<p>We were able to connect to the database server (which means your username and password is okay) but not able to select the <code>$db</code> database.</p>
<ul>
<li>Are you sure it exists?</li>
+<li>Does the user <code>".DB_USER."</code> have permission to use the <code>$db</code> database?</li>
<li>On some systems the name of your database is prefixed with your username, so it would be like username_wordpress. Could that be the problem?</li>
</ul>
<p>If you don't know how to setup a database you should <strong>contact your host</strong>. If all else fails you may find help at the <a href='http://wordpress.org/support/'>WordPress Support Forums</a>.</p>");
+ return;
}
}
- // ====================================================================
- // Format a string correctly for safe insert under all PHP conditions
-
+ /**
+ * Escapes content for insertion into the database, for security
+ *
+ * @param string $string
+ * @return string query safe string
+ */
function escape($string) {
return addslashes( $string ); // Disable rest for now, causing problems
if( !$this->dbh || version_compare( phpversion(), '4.3.0' ) == '-1' )
return mysql_real_escape_string( $string, $this->dbh );
}
+ /**
+ * Escapes content by reference for insertion into the database, for security
+ * @param string $s
+ */
+ function escape_by_ref(&$s) {
+ $s = $this->escape($s);
+ }
+
+ /**
+ * Prepares a SQL query for safe use, using sprintf() syntax
+ */
+ function prepare($args=NULL) {
+ if ( NULL === $args )
+ return;
+ $args = func_get_args();
+ $query = array_shift($args);
+ $query = str_replace("'%s'", '%s', $query); // in case someone mistakenly already singlequoted it
+ $query = str_replace('"%s"', '%s', $query); // doublequote unquoting
+ $query = str_replace('%s', "'%s'", $query); // quote the strings
+ array_walk($args, array(&$this, 'escape_by_ref'));
+ return @vsprintf($query, $args);
+ }
+
// ==================================================================
// Print SQL/DB error.
function print_error($str = '') {
global $EZSQL_ERROR;
- if (!$str) $str = mysql_error();
- $EZSQL_ERROR[] =
+ if (!$str) $str = mysql_error($this->dbh);
+ $EZSQL_ERROR[] =
array ('query' => $this->last_query, 'error_str' => $str);
+ $error_str = "WordPress database error $str for query $this->last_query";
+ error_log($error_str, 0);
+
+ // Is error output turned on or not..
+ if ( !$this->show_errors )
+ return false;
+
$str = htmlspecialchars($str, ENT_QUOTES);
$query = htmlspecialchars($this->last_query, ENT_QUOTES);
- // Is error output turned on or not..
- if ( $this->show_errors ) {
- // If there is an error then take note of it
- print "<div id='error'>
- <p class='wpdberror'><strong>WordPress database error:</strong> [$str]<br />
- <code>$query</code></p>
- </div>";
- } else {
- return false;
- }
+
+ // If there is an error then take note of it
+ print "<div id='error'>
+ <p class='wpdberror'><strong>WordPress database error:</strong> [$str]<br />
+ <code>$query</code></p>
+ </div>";
}
// ==================================================================
// Turn error handling on or off..
- function show_errors() {
- $this->show_errors = true;
+ function show_errors( $show = true ) {
+ $errors = $this->show_errors;
+ $this->show_errors = $show;
+ return $errors;
}
-
+
function hide_errors() {
+ $show = $this->show_errors;
$this->show_errors = false;
+ return $show;
}
// ==================================================================
// Basic Query - see docs for more detail
function query($query) {
+ if ( ! $this->ready )
+ return false;
+
// filter the query, if filters are available
// NOTE: some queries are made before the plugins have been loaded, and thus cannot be filtered with this method
if ( function_exists('apply_filters') )
// Perform the query via std mysql_query function..
if (SAVEQUERIES)
$this->timer_start();
-
+
$this->result = @mysql_query($query, $this->dbh);
++$this->num_queries;
$this->queries[] = array( $query, $this->timer_stop() );
// If there is an error then take note of it..
- if ( mysql_error() ) {
+ if ( mysql_error($this->dbh) ) {
$this->print_error();
return false;
}
if ( preg_match("/^\\s*(insert|delete|update|replace) /i",$query) ) {
- $this->rows_affected = mysql_affected_rows();
+ $this->rows_affected = mysql_affected_rows($this->dbh);
// Take note of the insert_id
if ( preg_match("/^\\s*(insert|replace) /i",$query) ) {
- $this->insert_id = mysql_insert_id($this->dbh);
+ $this->insert_id = mysql_insert_id($this->dbh);
}
// Return number of rows affected
$return_val = $this->rows_affected;
// Log number of rows the query returned
$this->num_rows = $num_rows;
-
+
// Return number of rows selected
$return_val = $this->num_rows;
}
return $return_val;
}
- // ==================================================================
- // Get one variable from the DB - see docs for more detail
-
+ /**
+ * Get one variable from the database
+ * @param string $query (can be null as well, for caching, see codex)
+ * @param int $x = 0 row num to return
+ * @param int $y = 0 col num to return
+ * @return mixed results
+ */
function get_var($query=null, $x = 0, $y = 0) {
$this->func_call = "\$db->get_var(\"$query\",$x,$y)";
if ( $query )
return (isset($values[$x]) && $values[$x]!=='') ? $values[$x] : null;
}
- // ==================================================================
- // Get one row from the DB - see docs for more detail
-
+ /**
+ * Get one row from the database
+ * @param string $query
+ * @param string $output ARRAY_A | ARRAY_N | OBJECT
+ * @param int $y row num to return
+ * @return mixed results
+ */
function get_row($query = null, $output = OBJECT, $y = 0) {
$this->func_call = "\$db->get_row(\"$query\",$output,$y)";
if ( $query )
$this->query($query);
+ else
+ return null;
+
+ if ( !isset($this->last_result[$y]) )
+ return null;
if ( $output == OBJECT ) {
return $this->last_result[$y] ? $this->last_result[$y] : null;
}
}
- // ==================================================================
- // Function to get 1 column from the cached result set based in X index
- // se docs for usage and info
-
+ /**
+ * Gets one column from the database
+ * @param string $query (can be null as well, for caching, see codex)
+ * @param int $x col num to return
+ * @return array results
+ */
function get_col($query = null , $x = 0) {
if ( $query )
$this->query($query);
+ $new_array = array();
// Extract the column values
for ( $i=0; $i < count($this->last_result); $i++ ) {
$new_array[$i] = $this->get_var(null, $x, $i);
return $new_array;
}
- // ==================================================================
- // Return the the query as a result set - see docs for more details
-
+ /**
+ * Return an entire result set from the database
+ * @param string $query (can also be null to pull from the cache)
+ * @param string $output ARRAY_A | ARRAY_N | OBJECT
+ * @return mixed results
+ */
function get_results($query = null, $output = OBJECT) {
$this->func_call = "\$db->get_results(\"$query\", $output)";
if ( $query )
$this->query($query);
+ else
+ return null;
// Send back array of objects. Each row is an object
if ( $output == OBJECT ) {
}
}
-
- // ==================================================================
- // Function to get column meta data info pertaining to the last query
- // see docs for more info and usage
-
+ /**
+ * Grabs column metadata from the last query
+ * @param string $info_type one of name, table, def, max_length, not_null, primary_key, multiple_key, unique_key, numeric, blob, type, unsigned, zerofill
+ * @param int $col_offset 0: col name. 1: which table the col's in. 2: col's max length. 3: if the col is numeric. 4: col's type
+ * @return mixed results
+ */
function get_col_info($info_type = 'name', $col_offset = -1) {
if ( $this->col_info ) {
if ( $col_offset == -1 ) {
}
}
+ /**
+ * Starts the timer, for debugging purposes
+ */
function timer_start() {
$mtime = microtime();
$mtime = explode(' ', $mtime);
$this->time_start = $mtime[1] + $mtime[0];
return true;
}
-
- function timer_stop($precision = 3) {
+
+ /**
+ * Stops the debugging timer
+ * @return int total time spent on the query, in milliseconds
+ */
+ function timer_stop() {
$mtime = microtime();
$mtime = explode(' ', $mtime);
$time_end = $mtime[1] + $mtime[0];
return $time_total;
}
+ /**
+ * Wraps fatal errors in a nice header and footer and dies.
+ * @param string $message
+ */
function bail($message) { // Just wraps errors in a nice header and footer
- if ( !$this->show_errors )
- return false;
- header( 'Content-Type: text/html; charset=utf-8');
- echo <<<HEAD
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <title>WordPress › Error</title>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <style media="screen" type="text/css">
- <!--
- html {
- background: #eee;
- }
- body {
- background: #fff;
- color: #000;
- font-family: Georgia, "Times New Roman", Times, serif;
- margin-left: 25%;
- margin-right: 25%;
- padding: .2em 2em;
- }
-
- h1 {
- color: #006;
- font-size: 18px;
- font-weight: lighter;
- }
-
- h2 {
- font-size: 16px;
- }
-
- p, li, dt {
- line-height: 140%;
- padding-bottom: 2px;
- }
-
- ul, ol {
- padding: 5px 5px 5px 20px;
- }
- #logo {
- margin-bottom: 2em;
+ if ( !$this->show_errors ) {
+ if ( class_exists('WP_Error') )
+ $this->error = new WP_Error('500', $message);
+ else
+ $this->error = $message;
+ return false;
}
- -->
- </style>
- </head>
- <body>
- <h1 id="logo"><img alt="WordPress" src="http://static.wordpress.org/logo.png" /></h1>
-HEAD;
- echo $message;
- echo "</body></html>";
- die();
+ wp_die($message);
}
}
-$wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
-?>
\ No newline at end of file
+if ( ! isset($wpdb) )
+ $wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
+?>
scripts.mit.edu / autoinstalls / wordpress.git / blobdiff