Php can'；无法打开文件或找到文件夹

我似乎找不到名为invoice的文件夹，也不确定我的代码是否正确

我试图将写入更改为写入和读取，但它仍然没有在文件夹中为我创建文件

$invoice = "------------------------------------\n"; 
$invoice .= "Level 1 Monthly Subscriptionplan Information\n"; 
$invoice .=  $level1."\n"; 
$invoice .= "Subscriptionplan:".$row['subscriptionplan']."\n"; 
$invoice .= "Enrollment Date:".$row['subscriptionplandate']."\n"; 
$invoice .= "Monthly Fees:".$row['feesmonthly']."\n"; 
$invoice .= "Payment Status:".$row['paid']."\n"; 
$invoice .= "Expiry Date:".$row['expirydate']."\n"; 
$invoice .= "Payment Due Date:".$row['paidbydate']."\n"; 

$myfile='invoice/level1monthly/'.$_SESSION['u_uid'].'.txt';
$fh = fopen($myfile, 'w+') or die("can't open file");
fwrite($fh, $invoice);
fclose($fh);

我希望它在live server的根目录中创建一个名为invoice的文件夹

Level 3 Monthly Subscriptionplan Information Subscriptionplan: Enrollment Date: Monthly Fees:0 Payment Status: Expiry Date: Payment Due Date: 这是我的更新代码。。。在创建一个新文件（如果它不存在）并附加它时，这是否有效

$myfile='invoice/level1monthly'.$_SESSION['u_uid'].'.txt';

                                  if(file_exists($myfile)) {
                                     $invoice = "------------------------------------\n"; 
                                $invoice .= "Level 1 Monthly Subscriptionplan Information\n"; 
                                $invoice .=  $level1."\n"; 
                                $invoice .= "Subscriptionplan:".$row['subscriptionplan']."\n"; 
                                $invoice .= "Enrollment Date:".$row['subscriptionplandate']."\n"; 
                                $invoice .= "Monthly Fees:".$row['feesmonthly']."\n"; 
                                $invoice .= "Payment Status:".$row['paid']."\n"; 
                                $invoice .= "Expiry Date:".$row['expirydate']."\n"; 
                                $invoice .= "Payment Due Date:".$row['paidbydate']."\n"; 

                                $fh = fopen($myfile, 'a+') or die("can't open file");
                                fwrite($fh, $invoice);
                                fclose($fh);
                                  } else {

                                  $invoice = "------------------------------------\n"; 
                                $invoice .= "Level 1 Monthly Subscriptionplan Information\n"; 
                                $invoice .=  $level1."\n"; 
                                $invoice .= "Subscriptionplan:".$row['subscriptionplan']."\n"; 
                                $invoice .= "Enrollment Date:".$row['subscriptionplandate']."\n"; 
                                $invoice .= "Monthly Fees:".$row['feesmonthly']."\n"; 
                                $invoice .= "Payment Status:".$row['paid']."\n"; 
                                $invoice .= "Expiry Date:".$row['expirydate']."\n"; 
                                $invoice .= "Payment Due Date:".$row['paidbydate']."\n"; 
                                $myfile='invoice/level1monthly'.$_SESSION['u_uid'].'.txt';
                                $fh = fopen($myfile, 'w+') or die("can't open file");
                                fwrite($fh, $invoice);
                                fclose($fh);
                                  }

---

如果尚未创建目录，则需要手动创建或使用

mkdir（）

：

你也可以使用

file\u put\u contents（）

，我认为这更直截了当：

$invoice = "------------------------------------\n"; 
$invoice .= "Level 1 Monthly Subscriptionplan Information\n"; 
$invoice .=  $level1."\n"; 
$invoice .= "Subscriptionplan:".$row['subscriptionplan']."\n"; 
$invoice .= "Enrollment Date:".$row['subscriptionplandate']."\n"; 
$invoice .= "Monthly Fees:".$row['feesmonthly']."\n"; 
$invoice .= "Payment Status:".$row['paid']."\n"; 
$invoice .= "Expiry Date:".$row['expirydate']."\n"; 
$invoice .= "Payment Due Date:".$row['paidbydate']."\n";
# I am assuming this script is happening in the root.
$dir = __DIR__.'/invoice/level1monthly/';
if(!is_dir($dir))
    mkdir($dir, 1, 0755);
# Append
$myfile = $dir.$_SESSION['u_uid'].'.txt';
# Put contents
file_put_contents($myfile, $invoice);

echo is_file($myfile);

---

据我所知，使用w模式将尝试创建文件，但它不存在，但模式a也会创建文件吗？它已使用w+模式创建文件，但现在如果我想附加，是否需要添加a模式？我想，如果我想先创建一个新文件，然后再附加到它，我该如何让它工作呢？我这里有一些奇怪的东西，我应该把代码放在我的电子邮件之后还是电子邮件之前？这与订单有关吗？级别3月订阅计划信息订阅计划：注册日期：月费：0付款状态：到期日期：付款到期日期：启用错误报告。谢谢，我刚刚更新了代码，因为一些变量无法通过。。。我可以在这里使用$row变量，还是应该使用普通变量？也许$row变量是一个数组，所以我不能使用itI。我在这里也很困惑，因为我已经使用w模式为新用户创建了一个新文件，但是我如何将其改为append？假设用户想要创建一个新文件，如上图所示，但是对于每一个额外的升级，我想附加到它。我需要做一些类似于。。。if（$file_exists（$myfile）{file_put_contents（$myfile，“a”）}谢谢，if the file exists语句中我上面更新的代码正确吗？

$dir = __DIR__.'/invoice/level1monthly/';
# If directory doesn't exist
if(!is_dir($dir))
    # Create it recursively and use folder permission 0755
    mkdir($dir, 1, 0755);

$invoice = "------------------------------------\n"; 
$invoice .= "Level 1 Monthly Subscriptionplan Information\n"; 
$invoice .=  $level1."\n"; 
$invoice .= "Subscriptionplan:".$row['subscriptionplan']."\n"; 
$invoice .= "Enrollment Date:".$row['subscriptionplandate']."\n"; 
$invoice .= "Monthly Fees:".$row['feesmonthly']."\n"; 
$invoice .= "Payment Status:".$row['paid']."\n"; 
$invoice .= "Expiry Date:".$row['expirydate']."\n"; 
$invoice .= "Payment Due Date:".$row['paidbydate']."\n";
# I am assuming this script is happening in the root.
$dir = __DIR__.'/invoice/level1monthly/';
if(!is_dir($dir))
    mkdir($dir, 1, 0755);
# Append
$myfile = $dir.$_SESSION['u_uid'].'.txt';
# Put contents
file_put_contents($myfile, $invoice);

echo is_file($myfile);