You Are Here : /var/www/virtual/tvarditsa.org/classes/ |
| Current File : /var/www/virtual/tvarditsa.org/classes/pager.class.php |
<?php
/**
* VSite Framework for PHP
*
* This product includes PHP, freely available from
* <{@link http://www.php.net/ http://www.php.net/}>
*
* @package VSite_Framework
* @subpackage DataBase
* @copyright Copyright (c) 2003, Valentin Sheiretsky
* @license http://www.vsite.org/license.txt BSD-style license
*/
if (!defined("_PAGER_CLASS_")) {
/**
* @ignore
*/
define("_PAGER_CLASS_", 1);
$this_dir = dirname(__FILE__) . DIRECTORY_SEPARATOR;
if (!defined("_ADODB_CLASS_")) {
include ($this_dir . 'adodb.class.php');
}
/**
* ADODB data paging
*
* <code>
* include (CLASSPATH.'pager.class.php');
*
* $p = new Pager();
* $p->set_offset (0); // Data Offset
* $p->set_condition ('field = 1'); // Where Clause
* $p->set_order ('field ASC'); // Data Order
* $p->set_records (10); // Data Limit
* $p->set_groups (10); // Pages Limit
* $rs = $p->create('table', '*');
*
* if ($rs['total'] > 0)
* foreach ($rs['data'] as $field_name => $field_value) {
* // data loop
* }
* </code>
*
* @version 2.0.11
* @author Valentin Sheiretsky <valio@vsite.org>
* @package VSite_Framework
*/
class Pager extends ADODB {
/**#@+
* @access private
*/
var $_cfg = null;
var $_records = 10;
var $_groups = 10;
var $_offset = 0;
var $_where = '';
var $_order = '';
var $_info = NULL;
/**#@-*/
/**
* Constructor
*/
function __construct() {
parent::__construct();
$this->Execute('set names cp1251');
}
/**
* @ignore
*/
function Pager () {
$this->__construct();
}
/**
* Create Data Pager
*
* @param string $table Table Name
* @param string $fields Table fields
* @param bool $no_count Count Total Rows
* @param bool $p_slide Use Slide Navigation
* @return mixed Data Array or False
*/
function create ($table, $fields, $no_count = false, $p_slide = true) {
/* clear navigation */
$this->_info = array();
$this->_info['table'] = $table;
$this->_info['fields'] = $fields;
$this->_info['first'] = 0;
$this->_info['last'] = 0;
$this->_info['prev'] = -1;
$this->_info['next'] = -1;
$this->_info['prev_g'] = -1;
$this->_info['next_g'] = -1;
$this->_info['pages'] = NULL;
$this->_info['total'] = 0;
$this->_info['data'] = NULL;
$this->_info['offset'] = $this->_offset;
$this->_info['records'] = $this->_records;
if ($this->_records <= 0) $no_count = true;
if (!$no_count) {
/* count total records */
$have_group = strpos(strtolower($this->_where), "group");
if ($have_group === false) {
$sql = 'SELECT COUNT(*) as total FROM '.$table;
if ($this->_where != NULL) $sql .= ' WHERE ' . $this->_where;
if ($this->debug) echo "<h5>COUNT: ".$sql."</h5>";
if (($rs = $this->Execute($sql)) === false) return $this->_info;
} else {
$this->Execute('CREATE TEMPORARY TABLE adodb_pager_tmp (counter SMALLINT)');
$sql = 'INSERT INTO adodb_pager_tmp SELECT 1 as total FROM '.$table;
if ($this->_where != NULL) $sql .= ' WHERE ' . $this->_where;
if ($this->debug) echo "<h5>TEMPSELECT: ".$sql."</h5>";
$this->Execute($sql);
$sql = 'SELECT COUNT(*) as total FROM adodb_pager_tmp';
if ($this->debug) echo "<h5>TEMPCOUNT: ".$sql."</h5>";
$rs = $this->Execute($sql);
$this->Execute('DROP TABLE adodb_pager_tmp');
if (($rs === false) || ($rs->EOF)) return $this->_info;
}
$this->_info['total'] = $rs->fields['total'];
$rs->Close();
if ($this->_info['total'] <= 0) return $this->_info;
}
/* get data */
$sql = 'SELECT '.$fields.' FROM '.$table;
if ($this->_where != '')
$sql .= ' WHERE ' . $this->_where;
if ($this->_order != '')
$sql .= ' ORDER BY ' . $this->_order;
if ($this->debug)
echo "<h5>GET: ".$sql." LIMIT ".$this->_offset.", ".$this->_records."</h5>";
$rs = $this->SelectLimit($sql, $this->_records, $this->_offset);
if (($rs === false) || ($rs->EOF)) return $this->_info;
$this->_info['data'] = $rs->GetRows();
$rs->Close();
if ($no_count) {
$this->_info['total'] = count($this->_info['data']);
$this->_info['pages'] = array(1 => $this->_offset);
return $this->_info;
}
/* create navigation */
// prev
if ($this->_offset > 0) {
if ($this->_offset >= $this->_records)
$this->_info['prev'] = $this->_offset - $this->_records;
else $this->_info['prev'] = 0;
}
// next
$next = $this->_offset + $this->_records;
if ($next < $this->_info['total'])
$this->_info['next'] = $this->_offset + $this->_records;
//last
$this->_info['last'] = floor(
($this->_info['total']-1) / $this->_records
) * $this->_records;
// prev groups
$g_size = $this->_groups * $this->_records;
$g_offset = $g_size * floor($this->_offset / $g_size);
$prev_g = $g_offset - $g_size;
if ($prev_g >= 0) $this->_info['prev_g'] = $prev_g;
// next groups
$next_g = $g_offset + $g_size;
if ($next_g < $this->_info['total']) $this->_info['next_g'] = $next_g;
if ($p_slide) {
// slide - pages
$p_b = ceil(($this->_groups / 2) - 1) * $this->_records;
$s_page = $this->_offset - $p_b;
if ($s_page < 0) $s_page = 0;
$e_page = $this->_offset + ($g_size - $p_b) - $this->_records;
if ($e_page > $this->_info['last']) $e_page = $this->_info['last'];
while ($s_page <= $e_page) {
$s_page_n = floor($s_page / $this->_records) + 1;
$this->_info['pages'][$s_page_n] = $s_page;
$s_page += $this->_records;
}
if (sizeof($this->_info['pages']) <= 0) $this->_info['pages'] = NULL;
} else {
// page - pages
$s_page = $g_offset;
if ($this->_info['next_g'] > 0) $e_page = $this->_info['next_g'];
else $e_page = $this->_info['total'];
while ($s_page < $e_page) {
$s_page_n = floor($s_page / $this->_records) + 1;
$this->_info['pages'][$s_page_n] = $s_page;
$s_page += $this->_records;
}
if (sizeof($this->_info['pages']) <= 0) $this->_info['pages'] = NULL;
}
return $this->_info;
}
/**
* Insert Data Into Table
*
* @param string $table Table Name
* @param array $data Data Array
* @return mixed Return Insert ID (int) or False
*/
function insert ($table, $data) {
$sql = 'SELECT * FROM `'. $table .'` WHERE 0';
if ($this->debug) echo "<h5>BLANK-RS: ".$sql."</h5>";
$rs = $this->Execute($sql);
$sql = $this->GetInsertSQL($rs, $data, $this->_magic_quotes_gpc);
if ($this->debug) echo "<h5>INSERT: ".$sql."</h5>";
if ($sql == '') return false;
if (($status = $this->Execute($sql)) === false) return false;
return $this->Insert_ID();
}
/**
* Update Data Into Table
*
* @param string $table Table Name
* @param array $data Data Array
* @param bool $insert Insert Enabled by Default
* @return mixed Return Insert ID (int) or Affected Rows (int) or False
*/
function update ($table, $data, $insert = true) {
$sql = 'SELECT * FROM `'. $table .'`';
if ($this->_where != NULL) $sql .= ' WHERE ' . $this->_where;
if ($this->debug) echo "<h5>VERIFY: ".$sql."</h5>";
$rs = $this->Execute($sql);
if (($rs === false) || ($rs->EOF))
if ($insert)
$sql = $this->GetInsertSQL($rs, $data, $this->_magic_quotes_gpc);
else
return false;
else {
$sql = $this->GetUpdateSQL($rs, $data, false, $this->_magic_quotes_gpc);
$insert = false;
}
if ($this->debug)
if ($insert)
echo "<h5>INSERT: ".$sql."</h5>";
else
echo "<h5>UPDATE: ".$sql."</h5>";
if ($sql == '') return false;
if (($status = $this->Execute($sql)) === false) return false;
if ($insert) return $this->Insert_ID();
return $this->Affected_Rows();
}
/**
* Delete Rows from Table
*
* @param string $table Table Name
* @param bool $force_truncate Truncate Disabled by Default
* @return bool False on error
*/
function delete ($table, $force_truncate = false) {
$sql = 'DELETE FROM `'. $table .'`';
if ($this->_where != '') {
$sql .= ' WHERE ' . $this->_where;
if ($this->debug) echo "<h5>DELETE: ".$sql."</h5>";
} else {
if ($force_truncate) {
$sql = 'TRUNCATE TABLE `'. $table .'`';
if ($this->debug) echo "<h5>".$sql."</h5>";
} else {
if ($this->debug) echo "<h5>ERROR: TRUNCATE - DISABLED</h5>";
return false;
}
}
if (($status = $this->Execute($sql)) === false) return false;
return true;
}
/**
* Set Data Offset
*
* @param int $offset
*/
function set_offset ($offset) {
$this->_offset = intval($offset);
}
/**
* Get Data Offset
*
* @return int
*/
function get_offset () {
return $this->_offset;
}
/**
* Set Data Condition
*
* @param string $where
*/
function set_condition ($where) {
$this->_where = trim($where);
}
/**
* Get Data Condition
*
* @return string
*/
function get_condition () {
return $this->_where;
}
/**
* Set Data Order
*
* @param string $order
*/
function set_order ($order) {
$this->_order = trim($order);
}
/**
* Get Data Order
*
* @return string
*/
function get_order () {
return $this->_order;
}
/**
* Set Number Rows
*
* @param int $offset
*/
function set_records ($records) {
$this->_records = intval($records);
}
/**
* Get Number Rows
*
* @return int
*/
function get_records () {
return $this->_records;
}
/**
* Set Number Pages
*
* @param int $groups
*/
function set_groups ($groups) {
$this->_groups = intval($groups);
}
/**
* Get Number Pages
*
* @return int
*/
function get_groups () {
return $this->_groups;
}
/**
* Destructor
*/
function __destruct() {
parent::__destruct();
}
}
} // END PAGER_CLASS
?>