A PHP class that operates MySQL

<?php
/*
* This class was originally part of the phplib and I made some changes.
*/
Class Mydb_sql {
var $Host = "";
var $Database = "";
var $User = "";
var $Password = "";

var $Link _id = 0;
var $Query _id = 0;
var $Record = array ();
var $Row;

var $Errno = 0;
var $Error = "";

var $Auto _free = 0; # # Set this to 1 for automatic mysql_free_result ()
var $Auto _commit = 0; # # Set this to 1 to automatically commit results

var $debugmode = 0;

function Connect () {
if (0 = = $this->link_id) {
$this->link_id=mysql_pconnect ($this->host, $this->user, $this->password);
if (! $this->link_id) {
$this->halt ("Link-id = = False, Pconnect failed");
}
if (!mysql_query (sprintf ("Use%s", $this->database), $this->link_id)) {
$this->halt ("Cannot use database" $this->database);
}
}
}

function query ($Query _string) {
$this->connect ();

if ($this->debugmode)
printf ("Debug:query =%s<br>\n", $Query _string);

$this->query_id = mysql_query ($Query _string, $this->link_id);
$this->row = 0;
$this->errno = Mysql_errno ();
$this->error = Mysql_error ();
if (! $this->query_id) {
$this->halt ("Invalid SQL:". $Query _string);
}

return $this->query_id;
}

function Next_record () {
$this->record = mysql_fetch_array ($this->query_id);
$this->row + 1;
$this->errno = Mysql_errno ();
$this->error = Mysql_error ();

$stat = Is_array ($this->record);
if (! $stat && $this->auto_free) {
Mysql_free_result ($this->query_id);
$this->query_id = 0;
}
return $stat;
}

function Seek ($pos) {
$status = Mysql_data_seek ($this->query_id, $pos);
if ($status)
$this->row = $pos;
Return
}

function metadata ($table) {
$count = 0;
$id = 0;
$res = Array ();

$this->connect ();
$id = @mysql_list_fields ($this->database, $table);
if ($id < 0) {
$this->errno = Mysql_errno ();
$this->error = Mysql_error ();
$this->halt ("Metadata query failed.");
}
$count = Mysql_num_fields ($id);

for ($i =0; $i < $count; $i + +) {
$res [$i] ["table"] = mysql_field_table ($id, $i);
$res [$i] ["name"] = Mysql_field_name ($id, $i);
$res [$i] ["type"] = Mysql_field_type ($id, $i);
$res [$i] ["len"] = Mysql_field_len ($id, $i);
$res [$i] ["flags"] = Mysql_field_flags ($id, $i);
$res ["Meta"] [$res [$i] ["name"]] = $i;
$res ["Num_fields"]= $count;
}

Mysql_free_result ($id);
return $res;
}

function Affected_rows () {
Return Mysql_affected_rows ($this->link_id);
}

function Num_rows () {
Return mysql_num_rows ($this->query_id);
}

function Num_fields () {
Return Mysql_num_fields ($this->query_id);
}

function NF () {
return $this->num_rows ();
}

function np () {
Print $this->num_rows ();
}

function f ($Name) {
return $this->record[$Name];
}

function P ($Name) {
Print $this->record[$Name];
}

function Halt ($msg) {
printf ("</td></tr></table><b>database error:</b>%s<br>\n", $msg);
printf ("<b>mysql Error</b>:%s (%s) <br>\n",
$this->errno,
$this->error);
Die ("session halted.");
}
}

Class SQL extends Mydb_sql {
var $Host = "localhost";
var $Database = "";
var $User = "";
var $Password = "";

function Free_result () {
Return @mysql_free_result ($this->query_id);
}

function rollback () {
return 1;
}

function commit () {
return 1;
}

function Autocommit ($onezero) {
return 1;
}

function insert_id ($col = "", $tbl = "", $qual = "") {
Return mysql_insert_id ($this->query_id);
}
}
?>