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<?php
// MySQL database class
//
// For debugging, insert 'dbg(x);' anywhere in the program flow.
// x = 1: display db success/failure following content
// x = 2: display full queries following content
// x = 3: display full queries using echo; which will mess up display
// really bad but will return output in stubborn cases.
if(! class_exists('dba')) {
class dba {
private $debug = 0;
private $db;
function __construct($server,$user,$pass,$db,$install = false) {
$this->db = @new mysqli($server,$user,$pass,$db);
if((mysqli_connect_errno()) && (! install))
system_unavailable();
}
public function getdb() {
return $this->db;
}
public function q($sql) {
global $debug_text;
if(! $this->db )
return false;
$result = @$this->db->query($sql);
if($this->debug) {
$mesg = '';
if($this->db->mysqli->errno)
$debug_text .= $this->db->mysqli->error . EOL;
if($result === false)
$mesg = 'false';
elseif($result === true)
$mesg = 'true';
else
$mesg = $result->num_rows.' results' . EOL;
$str = 'SQL = ' . printable($sql) . EOL . 'SQL returned ' . $mesg . EOL;
switch($this->debug) {
case 3:
echo $str;
break;
default:
$debug_text .= $str;
break;
}
}
else {
if(($result === false) && (file_exists('dbfail.out')))
file_put_contents('dbfail.out', printable($sql) . ' returned false' . "\n", FILE_APPEND);
}
if(($result === true) || ($result === false))
return $result;
$r = array();
if($result->num_rows) {
while($x = $result->fetch_array(MYSQL_ASSOC))
$r[] = $x;
$result->free_result();
}
if($this->debug == 2)
$debug_text .= printable(print_r($r, true). EOL);
elseif($this->debug == 3)
echo printable(print_r($r, true) . EOL) ;
return($r);
}
public function dbg($dbg) {
$this->debug = $dbg;
}
public function escape($str) {
return @$this->db->real_escape_string($str);
}
function __destruct() {
@$this->db->close();
}
}}
if(! function_exists('printable')) {
function printable($s) {
$s = preg_replace("~([\x01-\x08\x0E-\x0F\x10-\x1F\x7F-\xFF])~",".", $s);
$s = str_replace("\x00",'.',$s);
if(x($_SERVER,'SERVER_NAME'))
$s = escape_tags($s);
return $s;
}}
// Procedural functions
if(! function_exists('dbg')) {
function dbg($state) {
global $db;
$db->dbg($state);
}}
if(! function_exists('dbesc')) {
function dbesc($str) {
global $db;
return($db->escape($str));
}}
// Function: q($sql,$args);
// Description: execute SQL query with printf style args.
// Example: $r = q("SELECT * FROM `%s` WHERE `uid` = %d",
// 'user', 1);
if(! function_exists('q')) {
function q($sql) {
global $db;
$args = func_get_args();
unset($args[0]);
$ret = $db->q(vsprintf($sql,$args));
return $ret;
}}
// Caller is responsible for ensuring that any integer arguments to
// dbesc_array are actually integers and not malformed strings containing
// SQL injection vectors. All integer array elements should be specifically
// cast to int to avoid trouble.
if(! function_exists('dbesc_array_cb')) {
function dbesc_array_cb(&$item, $key) {
if(is_string($item))
$item = dbesc($item);
}}
if(! function_exists('dbesc_array')) {
function dbesc_array(&$arr) {
if(is_array($arr) && count($arr)) {
array_walk($arr,'dbesc_array_cb');
}
}}
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