dbh = @mysql_connect($dbhost,$dbuser,$dbpassword);
if (!$this->dbh) {
die("
Error establishing a database connection! This probably means that the connection information in your wp-config.php file is incorrect. Double check it and try again.
- Are you sure you have the correct user/password?
- Are you sure that you have typed the correct hostname?
- Are you sure that the database server is running?
WordPress Support Forums
");
}
$this->select($dbname);
}
// ==================================================================
// Select a DB (if another one needs to be selected)
function select($db) {
if (!@mysql_select_db($db,$this->dbh)) {
die("
We're having a little trouble selecting the proper database for WordPress.
- Are you sure it exists?
- Your database name is currently specified as
" . DB_NAME .". Is this correct?
- On some systems the name of your database is prefixed with your username, so it would be like username_wordpress. Could that be the problem?
WordPress Support Forums
");
}
}
// ====================================================================
// Format a string correctly for safe insert under all PHP conditions
function escape($str) {
return mysql_escape_string(stripslashes($str));
}
// ==================================================================
// Print SQL/DB error.
function print_error($str = '') {
global $EZSQL_ERROR;
if (!$str) $str = mysql_error();
$EZSQL_ERROR[] =
array ('query' => $this->last_query, 'error_str' => $str);
// Is error output turned on or not..
if ( $this->show_errors ) {
// If there is an error then take note of it
print "
Database error: [$str]
$this->last_query
";
} else {
return false;
}
}
// ==================================================================
// Turn error handling on or off..
function show_errors() {
$this->show_errors = true;
}
function hide_errors() {
$this->show_errors = false;
}
// ==================================================================
// Kill cached query results
function flush() {
$this->last_result = null;
$this->col_info = null;
$this->last_query = null;
}
// ==================================================================
// Basic Query - see docs for more detail
function query($query) {
// initialise return
$return_val = 0;
$this->flush();
// Log how the function was called
$this->func_call = "\$db->query(\"$query\")";
// Keep track of the last query for debug..
$this->last_query = $query;
// Perform the query via std mysql_query function..
$this->result = @mysql_query($query,$this->dbh);
++$this->num_queries;
if (SAVEQUERIES) {
$this->savedqueries[] = $query;
}
// If there is an error then take note of it..
if ( mysql_error() ) {
$this->print_error();
return false;
}
if ( preg_match("/^\\s*(insert|delete|update|replace) /i",$query) ) {
$this->rows_affected = mysql_affected_rows();
// Take note of the insert_id
if ( preg_match("/^\\s*(insert|replace) /i",$query) ) {
$this->insert_id = mysql_insert_id($this->dbh);
}
// Return number of rows affected
$return_val = $this->rows_affected;
} else {
$i = 0;
while ($i < @mysql_num_fields($this->result)) {
$this->col_info[$i] = @mysql_fetch_field($this->result);
$i++;
}
$num_rows = 0;
while ( $row = @mysql_fetch_object($this->result) ) {
$this->last_result[$num_rows] = $row;
$num_rows++;
}
@mysql_free_result($this->result);
// Log number of rows the query returned
$this->num_rows = $num_rows;
// Return number of rows selected
$return_val = $this->num_rows;
}
return $return_val;
}
// ==================================================================
// Get one variable from the DB - see docs for more detail
function get_var($query=null, $x = 0, $y = 0) {
$this->func_call = "\$db->get_var(\"$query\",$x,$y)";
if ( $query )
$this->query($query);
// Extract var out of cached results based x,y vals
if ( $this->last_result[$y] ) {
$values = array_values(get_object_vars($this->last_result[$y]));
}
// If there is a value return it else return null
return (isset($values[$x]) && $values[$x]!=='') ? $values[$x] : null;
}
// ==================================================================
// Get one row from the DB - see docs for more detail
function get_row($query = null, $output = OBJECT, $y = 0) {
$this->func_call = "\$db->get_row(\"$query\",$output,$y)";
if ( $query )
$this->query($query);
if ( $output == OBJECT ) {
return $this->last_result[$y] ? $this->last_result[$y] : null;
} elseif ( $output == ARRAY_A ) {
return $this->last_result[$y] ? get_object_vars($this->last_result[$y]) : null;
} elseif ( $output == ARRAY_N ) {
return $this->last_result[$y] ? array_values(get_object_vars($this->last_result[$y])) : null;
} else {
$this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N");
}
}
// ==================================================================
// Function to get 1 column from the cached result set based in X index
// se docs for usage and info
function get_col($query = null , $x = 0) {
if ( $query )
$this->query($query);
// Extract the column values
for ( $i=0; $i < count($this->last_result); $i++ ) {
$new_array[$i] = $this->get_var(null, $x, $i);
}
return $new_array;
}
// ==================================================================
// Return the the query as a result set - see docs for more details
function get_results($query = null, $output = OBJECT) {
$this->func_call = "\$db->get_results(\"$query\", $output)";
if ( $query )
$this->query($query);
// Send back array of objects. Each row is an object
if ( $output == OBJECT ) {
return $this->last_result;
} elseif ( $output == ARRAY_A || $output == ARRAY_N ) {
if ( $this->last_result ) {
$i = 0;
foreach( $this->last_result as $row ) {
$new_array[$i] = (array) $row;
if ( $output == ARRAY_N ) {
$new_array[$i] = array_values($new_array[$i]);
}
$i++;
}
return $new_array;
} else {
return null;
}
}
}
// ==================================================================
// Function to get column meta data info pertaining to the last query
// see docs for more info and usage
function get_col_info($info_type = 'name', $col_offset = -1) {
if ( $this->col_info ) {
if ( $col_offset == -1 ) {
$i = 0;
foreach($this->col_info as $col ) {
$new_array[$i] = $col->{$info_type};
$i++;
}
return $new_array;
} else {
return $this->col_info[$col_offset]->{$info_type};
}
}
}
}
$wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
?>