我有以下代码,可让我从数据库生成 csv 文件。
<?php require_once 'dbconfig.php'; try { $pdo = new PDO("mysql:host=$host;dbname=$dbname", $username, $password); $sql = 'SELECT o.id_order ,c.id_customer, c.firstname, c.lastname, a.address1, a.address2, a.postcode, a.city,a.phone,c.email,a.phone_mobile, od.product_id, od.product_name,od.product_quantity, od.product_price,o.total_paid_tax_incl, c.id_customer, op.date_add, op.amount, op.payment_method FROM mod582_orders o INNER JOIN mod582_customer c ON o.id_customer = c.id_customer INNER JOIN mod582_address a ON o.id_address_delivery = a.id_address INNER JOIN mod582_order_detail od ON o.id_order = od.id_order INNER JOIN mod582_order_payment op ON o.reference = op.order_reference WHERE CAST(o.date_add AS DATE) LIKE "2023-01%" /*CAST( curdate() AS DATE)*/; '; $r = $pdo->query($sql); $tab = \[\]; $tab\[\] = \['ORDNOORDER', 'ORDREFCUSORDER', 'ORDNOCOSTNUMBER','ORDNOCUSTOMER','ORDCUSTOMERCODE','ORDCUSCAT','ORDTYPE','ORDCURRENCY','ORDCURRENCYRATE','ORDDESIGNATION','ORDREPCODE','ORDPORT','ORDPORTTYPE','ORDPORTRATE','DEONOORDER','DEOCOMMENT','DEOCOUNTRY','DEONAME','DEOFIRSTNAME','DEOADDRESS1','DEOADDRESS2','DEOZIPCODE','DEOCITY','DEOPHONE','DEOMAIL','DEOPHONEPORTABLE','ODLNOORDER','ODLNOORDERLINE','ODLNOARTICLE','ODLARTDESIGN','ODLQUANTITYORDER','ODLTTCCURUPRICE','ODLCODEPARCELLEFLEU','PAYNUMPAYMENT','PAYNOCUSTOMER','PAYNOORDER','PAYNOCURRENCY','PAYDATEPAYMENT','PAYPAYMENTTTCCUR','PAYCURRENCYRATE','PAYCONTREPARTIE'\]; $odrline = 1; while($rs = $r-\>fetch(PDO::FETCH_ASSOC)){ $tab\[\] = \[$rs\['id_order'\], $rs\['id_order'\], '17', '', 'AAA'.$rs\['id_customer'\],'DET','O','EUR','1','','115','D','P','17', $rs\['id_order'\],'','FRA', $rs\['firstname'\], $rs\['lastname'\], $rs\['adress1'\], $rs\['adress2'\], $rs\['postcode'\], $rs\['city'\], $rs\['phone'\], $rs\['email'\], $rs\['phone_modile'\], $rs\['id_order'\],$odrline, $rs\['product_id'\], $rs\['product_name'\], $rs\['product_quantity'\], $rs\['product_price'\],'','','', $rs\['id_order'\],'EUR', $rs\['date_add'\], $rs\['amount'\],'1','VIR'\]; } $fichier_csv = new SplFileObject('vinistoria/commandes.csv', 'w'); foreach($tab as $ligne){ $fichier_csv-\>fputcsv($ligne, ';'); } $date = date('d-m-y h:i:s'); echo "nouveau fichier commandes.csv créé à ". $date; } catch (PDOException $e) { die("Could not connect to the database $dbname :" . $e-\>getMessage()); } ?\>
但是,我有一些字段需要根据 csv 上一行中的字段值进行更改。 例如 : 对于 $rs['id_order'] 的值为 486 的所有行,我的 odrline 值为 1,但如果在下一行 $rs['id_order'] 为 487 odrline 应该是 2 等..
如何浏览我的文件并根据前一行中的字段更改值?
如何浏览我的文件并根据前一行中的字段更改值?
P粉2079697872024-04-05 12:15:03
不要在创建文件后通过文件来更改数据,而是在创建文件之前处理数据。
将 id_order
存储在变量中,并在每次循环迭代开始时进行比较。
类似于:
$odrline = 0; // start with zero, as incremented before first written out $prevordernumber = 0; // pick a number that is not a valid order number // or empty string if not numeric while($rs = $r->fetch(PDO::FETCH_ASSOC)){ // if order number has changed then increment order line if($prevordernumber != $rs['id_order']) $odrline++; $tab [] = ........ // update stored previous order number $prevordernumber = $rs['id_order']; } // write $tab to file $fichier_csv = new SplFileObject('vinistoria/commandes.csv', 'w'); foreach($tab as $ligne){ $fichier_csv-\>fputcsv($ligne, ';');