新行的PHP语法不起作用

Ric*_*ard 1 php syntax newline

我有一个相当简单的问题

任何人都可以告诉我为什么这不会在新行上显示每个变量,除了<br>.

$curtime = gmdate("d/m/Y H:i:s");
    //capture the PayPal returned information as order remarks
$oremarks =
"##$curtime##<br>".
"PayPal Transaction Information...\n".
"Txn Id: ".$ppInfo["txn_id"]."\n".
"Txn Type: ".$ppInfo["txn_type"]."\n".
"Item Number: ".$ppInfo["item_number"]."\n".
"Payment Date: ".$ppInfo["payment_date"]."\n".
"Payment Type: ".$ppInfo["payment_type"]."\n".
"Payment Status: ".$ppInfo["payment_status"]."\n".
"Currency: ".$ppInfo["mc_currency"]."\n".
"Payment Gross: ".$ppInfo["payment_gross"]."\n".
"Payment Fee: ".$ppInfo["payment_fee"]."\n".
"Payer Email: ".$ppInfo["payer_email"]."\n".
"Payer Id: ".$ppInfo["payer_id"]."\n".
"Payer Name: ".$ppInfo["first_name"]." ".$ppInfo["last_name"]."\n".
"Payer Status: ".$ppInfo["payer_status"]."\n".
"Country: ".$ppInfo["residence_country"]."\n".
"Business: ".$ppInfo["business"]."\n".
"Receiver Email: ".$ppInfo["receiver_email"]."\n".
"Receiver Id: ".$ppInfo["receiver_id"]."\n";

//Update database using $orderno, set status to Paid
//Send confirmation email to buyer and notification email to merchant
//Redirect to thankyou page
echo $oremarks;
Run Code Online (Sandbox Code Playgroud)

谢谢Richard