<?php
/************************************
* Cadence
* Remotely Hosted Guestbook Script.
* (c) 2006, Dennis Pedrie
* www.CadenceBook.com
* ez_sql.php
* Last Modified 11-30-05
************************************
* Author: Justin Vincent
* Web: http://php.justinvincent.com
***********************************
* This file is part of Cadence Guestbook
* Cadence is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* Cadence is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
***********************************/
define("EZSQL_VERSION","1.26");
define("OBJECT","OBJECT",true);
define("ARRAY_A","ARRAY_A",true);
define("ARRAY_N","ARRAY_N",true);
class db {
var $trace = false; // same as $debug_all
var $debug_all = false; // same as $trace
var $show_errors = true;
var $num_queries = 0;
var $last_query;
var $col_info;
var $debug_called;
var $vardump_called;
var $debug_cache = array();
var $rows_affected;
// ==================================================================
// DB Constructor - connects to the server and selects a database
function db($dbuser, $dbpassword, $dbname, $dbhost)
{
$this->dbh = @mysql_connect($dbhost,$dbuser,$dbpassword);
if ( ! $this->dbh )
{
$this->print_error("<ol><b>Error establishing a database connection!</b><li>Are you sure you have the correct user/password?<li>Are you sure that you have typed the correct hostname?<li>Are you sure that the database server is running?</ol>");
}
$this->select($dbname);
}
// ==================================================================
// Select a DB (if another one needs to be selected)
function select($db)
{
if ( !@mysql_select_db($db,$this->dbh))
{
$this->print_error("<ol><b>Error selecting database <u>$db</u>!</b><li>Are you sure it exists?<li>Are you sure there is a valid database connection?</ol>");
}
}
// ====================================================================
// Format a string correctly for safe insert under all PHP conditions
function escape($str)
{
return mysql_real_escape_string(stripslashes($str));
}
// ==================================================================
// Print SQL/DB error.
function print_error($str = "")
{
// All erros go to the global error array $EZSQL_ERROR..
global $EZSQL_ERROR;
// If no special error string then use mysql default..
if ( !$str )
{
$str = mysql_error($this->dbh);
$error_no = mysql_errno($this->dbh);
}
// Log this error to the global array..
$EZSQL_ERROR[] = array
(
"query" => $this->last_query,
"error_str" => $str,
"error_no" => $error_no
);
// Is error output turned on or not..
if ( $this->show_errors )
{
// If there is an error then take note of it
/*print "<blockquote><font face=arial size=2 color=ff0000>";
print "<b>SQL/DB Error --</b> ";
print "[<font color=000077>$str</font>]";
print "</font></blockquote>";*/
include "templates/system/dberr.php";
exit;
}
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()
{
// Get rid of these
$this->last_result = null;
$this->col_info = null;
$this->last_query = null;
}
// ==================================================================
// Basic Query - see docs for more detail
function query($query)
{
// For reg expressions
$query = trim($query);
// initialise return
$return_val = 0;
// Flush cached values..
$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 there is an error then take note of it..
if ( mysql_error() )
{
$this->print_error();
return false;
}
// Query was an insert, delete, update, replace
if ( preg_match("/^(insert|delete|update|replace)\s+/i",$query) )
{
$this->rows_affected = mysql_affected_rows();
// Take note of the insert_id
if ( preg_match("/^(insert|replace)\s+/i",$query) )
{
$this->insert_id = mysql_insert_id($this->dbh);
}
// Return number fo rows affected
$return_val = $this->rows_affected;
}
// Query was an select
else
{
// Take note of column info
$i=0;
while ($i < @mysql_num_fields($this->result))
{
$this->col_info[$i] = @mysql_fetch_field($this->result);
$i++;
}
// Store Query Results
$num_rows=0;
while ( $row = @mysql_fetch_object($this->result) )
{
// Store relults as an objects within main array
$this->last_result[$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;
}
// If debug ALL queries
$this->trace || $this->debug_all ? $this->debug() : null ;
$this->rows_affected = mysql_affected_rows();
//echo mysql_affected_rows();
return $return_val;
}
// ==================================================================
// Get one variable from the DB - see docs for more detail
function get_var($query=null,$x=0,$y=0)
{
// Log how the function was called
$this->func_call = "\$db->get_var(\"$query\",$x,$y)";
// If there is a query then perform it if not then use cached results..
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)
{
// Log how the function was called
$this->func_call = "\$db->get_row(\"$query\",$output,$y)";
// If there is a query then perform it if not then use cached results..
if ( $query )
{
$this->query($query);
}
// If the output is an object then return object using the row offset..
if ( $output == OBJECT )
{
return $this->last_result[$y]?$this->last_result[$y]:null;
}
// If the output is an associative array then return row as such..
elseif ( $output == ARRAY_A )
{
return $this->last_result[$y]?get_object_vars($this->last_result[$y]):null;
}
// If the output is an numerical array then return row as such..
elseif ( $output == ARRAY_N )
{
return $this->last_result[$y]?array_values(get_object_vars($this->last_result[$y])):null;
}
// If invalid output type was specified..
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 there is a query then perform it if not then use cached results..
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)
{
// Log how the function was called
$this->func_call = "\$db->get_results(\"$query\", $output)";
// If there is a query then perform it if not then use cached results..
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] = get_object_vars($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]->{$info_type};
}
}
}
// ==================================================================
// Dumps the contents of any input variable to screen in a nicely
// formatted and easy to understand way - any type: Object, Var or Array
function vardump($mixed='')
{
global $CONFIG;
echo "<p><table><tr><td bgcolor=ffffff><blockquote><font color=000090>";
echo "<pre><font face=arial>";
if ( ! $this->vardump_called )
{
echo "<font color=800080><b>ezSQL</b> (v". $CONFIG['cadence_version'] .") <b>Variable Dump..</b></font>\n\n";
}
$var_type = gettype ($mixed);
print_r(($mixed?$mixed:"<font color=red>No Value / False</font>"));
echo "\n\n<b>Type:</b> " . ucfirst($var_type) . "\n";
echo "<b>Last Query</b> [$this->num_queries]<b>:</b> ".($this->last_query?$this->last_query:"NULL")."\n";
echo "<b>Last Function Call:</b> " . ($this->func_call?$this->func_call:"None")."\n";
echo "<b>Last Rows Returned:</b> ".count($this->last_result)."\n";
echo "</font></pre></font></blockquote></td></tr></table>".$this->donation();
echo "\n<hr size=1 noshade color=dddddd>";
$this->vardump_called = true;
}
// Alias for the above function
function dumpvar($mixed)
{
$this->vardump($mixed);
}
// ==================================================================
// Displays the last query string that was sent to the database & a
// table listing results (if there were any).
// (abstracted into a seperate file to save server overhead).
function debug()
{
global $CONFIG;
$this->debug_cache[''];
$this->debug_called = true;
}
// =======================================================
// Naughty little function to ask for some remuniration!
function donation()
{
}
function dberr() {
include "templates/system/dberr.php";
}
}
?>