php實現(xiàn)仿寫CodeIgniter的購物車類

2020-03-22 20:33:20

字體：大中小

供稿：網(wǎng)友

本文實例講述了php實現(xiàn)仿寫CodeIgniter的購物車類。分享給大家供大家參考。具體如下：這里仿寫CodeIgniter的購物車類購物車基本功能： 1) 將物品加入購物車
2) 從購物車中刪除物品
3) 更新購物車物品信息【+1/-1】
4) 對購物車物品進(jìn)行統(tǒng)計
1. 總項目
2. 總數(shù)量
3. 總金額
5) 對購物單項物品的數(shù)量及金額進(jìn)行統(tǒng)計
6) 清空購物車 cart.php文件如下： * @author quanshuidingdang html' target='_blank'>class Cart { //物品id及名稱規(guī)則,調(diào)試信息控制 private $product_id_rule = '.a-z0-9-_'; //小寫字母 | 數(shù)字 | ._- private $product_name_rule = '.:a-z0-9-_';//小寫字母 | 數(shù)字 | ._-: private $debug = TRUE; //購物車 private $_cart_contents = array(); * 構(gòu)造函數(shù) * @param array public function __construct() { //是否第一次使用 if(isset($_SESSION['cart_contents'])) { $this- _cart_contents = $_SESSION['cart_contents']; } else { $this- _cart_contents['cart_total'] = 0; $this- _cart_contents['total_items'] = 0; if($this- debug === TRUE) { //$this- _log("cart_create_success"); * 將物品加入購物車 * @access public * @param array 一維或多維數(shù)組,必須包含鍵值名: id - 物品ID標(biāo)識, qty - 數(shù)量(quantity), price - 單價(price), name - 物品姓名 * @return bool public function insert($items = array()) { //輸入物品參數(shù)異常 if( ! is_array($items) OR count($items) == 0) { if($this- debug === TRUE) { $this- _log("cart_no_items_insert"); return FALSE; //物品參數(shù)處理 $save_cart = FALSE; if(isset($items['id'])) { if($this- _insert($items) === TRUE) { $save_cart = TRUE; } else { foreach($items as $val) { if(is_array($val) AND isset($val['id'])) { if($this- _insert($val) == TRUE) { $save_cart = TRUE; //當(dāng)插入成功后保存數(shù)據(jù)到session if($save_cart) { $this- _save_cart(); return TRUE; return FALSE; * 更新購物車物品信息 * @access public * @param array * @return bool public function update($items = array()) { //輸入物品參數(shù)異常 if( !is_array($items) OR count($items) == 0) { if($this- debug === TRUE) { $this- _log("cart_no_items_insert"); return FALSE; //物品參數(shù)處理 $save_cart = FALSE; if(isset($items['rowid']) AND isset($items['qty'])) { if($this- _update($items) === TRUE) { $save_cart = TRUE; } else { foreach($items as $val) { if(is_array($val) AND isset($val['rowid']) AND isset($val['qty'])) { if($this- _update($val) === TRUE) { $save_cart = TRUE; //當(dāng)更新成功后保存數(shù)據(jù)到session if($save_cart) { $this- _save_cart(); return TRUE; return FALSE; * 獲取購物車物品總金額 * @return int public function total() { return $this- _cart_contents['cart_total']; * 獲取購物車物品種類 * @return int public function total_items() { return $this- _cart_contents['total_items']; * 獲取購物車 * @return array public function contents() { return $this- _cart_contents; * 獲取購物車物品options * @param string * @return array public function options($rowid = '') { if($this- has_options($rowid)) { return $this- _cart_contents[$rowid]['options']; } else { return array(); * 清空購物車 public function destroy() { unset($this- _cart_contents); $this- _cart_contents['cart_total'] = 0; $this- _cart_contents['total_items'] = 0; unset($_SESSION['cart_contents']); * 判斷購物車物品是否有options選項 * @param string * @return bool private function has_options($rowid = '') { if( ! isset($this- _cart_contents[$rowid]['options']) OR count($this- _cart_contents[$rowid]['options']) === 0) { return FALSE; return TRUE; * 插入數(shù)據(jù) * @access private * @param array * @return bool private function _insert($items = array()) { //輸入物品參數(shù)異常 if( ! is_array($items) OR count($items) == 0) { if($this- debug === TRUE) { $this- _log("cart_no_data_insert"); return FALSE; //如果物品參數(shù)無效（無id/qty/price/name） if( ! isset($items['id']) OR ! isset($items['qty']) OR ! isset($items['price']) OR ! isset($items['name'])) { if($this- debug === TRUE) { $this- _log("cart_items_data_invalid"); return FALSE; //去除物品數(shù)量左零及非數(shù)字字符 $items['qty'] = trim(preg_replace('/([^0-9])/i', '', $items['qty'])); $items['qty'] = trim(preg_replace('/^([0]+)/i', '', $items['qty'])); //如果物品數(shù)量為0，或非數(shù)字，則我們對購物車不做任何處理! if( ! is_numeric($items['qty']) OR $items['qty'] == 0) { if($this- debug === TRUE) { $this- _log("cart_items_data(qty)_invalid"); return FALSE; //物品ID正則判斷 if( ! preg_match('/^['.$this- product_id_rule.']+$/i', $items['id'])) { if($this- debug === TRUE) { $this- _log("cart_items_data(id)_invalid"); return FALSE; //物品名稱正則判斷 if( ! preg_match('/^['.$this- product_name_rule.']+$/i', $items['name'])) { if($this- debug === TRUE) { $this- _log("cart_items_data(name)_invalid"); return FALSE; //去除物品單價左零及非數(shù)字（帶小數(shù)點）字符 $items['price'] = trim(preg_replace('/([^0-9.])/i', '', $items['price'])); $items['price'] = trim(preg_replace('/^([0]+)/i', '', $items['price'])); //如果物品單價非數(shù)字 if( ! is_numeric($items['price'])) { if($this- debug === TRUE) { $this- _log("cart_items_data(price)_invalid"); return FALSE; //生成物品的唯一id if(isset($items['options']) AND count($items['options']) 0) { $rowid = md5($items['id'].implode('', $items['options'])); } else { $rowid = md5($items['id']); //加入物品到購物車 unset($this- _cart_contents[$rowid]); $this- _cart_contents[$rowid]['rowid'] = $rowid; foreach($items as $key = $val) { $this- _cart_contents[$rowid][$key] = $val; return TRUE; * 更新購物車物品信息（私有） * @access private * @param array * @return bool private function _update($items = array()) { //輸入物品參數(shù)異常 if( ! isset($items['rowid']) OR ! isset($items['qty']) OR ! isset($this- _cart_contents[$items['rowid']])) { if($this- debug == TRUE) { $this- _log("cart_items_data_invalid"); return FALSE; //去除物品數(shù)量左零及非數(shù)字字符 $items['qty'] = preg_replace('/([^0-9])/i', '', $items['qty']); $items['qty'] = preg_replace('/^([0]+)/i', '', $items['qty']); //如果物品數(shù)量非數(shù)字，對購物車不做任何處理! if( ! is_numeric($items['qty'])) { if($this- debug === TRUE) { $this- _log("cart_items_data(qty)_invalid"); return FALSE; //如果購物車物品數(shù)量與需要更新的物品數(shù)量一致，則不需要更新 if($this- _cart_contents[$items['rowid']]['qty'] == $items['qty']) { if($this- debug === TRUE) { $this- _log("cart_items_data(qty)_equal"); return FALSE; //如果需要更新的物品數(shù)量等于0，表示不需要這件物品，從購物車種清除 //否則修改購物車物品數(shù)量等于輸入的物品數(shù)量 if($items['qty'] == 0) { unset($this- _cart_contents[$items['rowid']]); } else { $this- _cart_contents[$items['rowid']]['qty'] = $items['qty']; return TRUE; * 保存購物車數(shù)據(jù)到session * @access private * @return bool private function _save_cart() { //首先清除購物車總物品種類及總金額 unset($this- _cart_contents['total_items']); unset($this- _cart_contents['cart_total']); //然后遍歷數(shù)組統(tǒng)計物品種類及總金額 $total = 0; foreach($this- _cart_contents as $key = $val) { if( ! is_array($val) OR ! isset($val['price']) OR ! isset($val['qty'])) { continue; $total += ($val['price'] * $val['qty']); //每種物品的總金額 $this- _cart_contents[$key]['subtotal'] = ($val['price'] * $val['qty']); //設(shè)置購物車總物品種類及總金額 $this- _cart_contents['total_items'] = count($this- _cart_contents); $this- _cart_contents['cart_total'] = $total; //如果購物車的元素個數(shù)少于等于2，說明購物車為空 if(count($this- _cart_contents) = 2) { unset($_SESSION['cart_contents']); return FALSE; //保存購物車數(shù)據(jù)到session $_SESSION['cart_contents'] = $this- _cart_contents; return TRUE; * 日志記錄 * @access private * @param string * @return bool private function _log($msg) { return @file_put_contents('cart_err.log', $msg, FILE_APPEND); /*End of file cart.php*/ /*Location /htdocs/cart.php*/ cart_demo.php文件如下： session_start(); require_once('cart.php'); $items = array( 0 = array( 'id' = 'sp001', 'qty' = 20, 'price' = '10.50', 'name' = 'a002', 'options' = array( 'made' = 'china', 'company' = 'bgi' 1 = array( 'id' = 'sp002', 'qty' = 1, 'price' = '3.50', 'name' = 'b002' $arr = array( 'rowid' = '86dbb7cb58a667558b4bbb1f60330028', 'qty' = 21 $cart = new Cart(); $cart- insert($items); //var_dump($cart- contents()); $cart- update($arr); var_dump($cart- contents()); //$cart- destroy(); //var_dump($_SESSION['cart_contents']); /*end of php*/ 希望本文所述對大家的php程序設(shè)計有所幫助。
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