從PHP/HTML/JavaScript的數據，並添加到空txt文件

Question

我想從HTML/JavaScript文件採取信息，我想添加數據（$ email = string，$ vote = value from radio button ）到一個空的txt文件使用PHP。

我的代碼有什麼問題？我不認爲foreach循環正在運行。謝謝！

<?php 
$email = $_REQUEST['email']; 
$vote = $_REQUEST['player']; 
$emailList = file('email.txt'); 
$voteList = file('votes.txt'); 

foreach ($emailList as $line => $value) { 
    if (is_null($value)) { 
     file_put_contents("email.txt", $email."<br>", FILE_APPEND); 
    } else if ($value == $email) { 
     echo "You have already voted!"; 
    } else { 
     file_put_contents("email.txt", $email."<br>", FILE_APPEND); 
     echo "Your vote has been stored! Thanks."; 
    } 
} 
?> 

Answer 1

$foundMail = false; 
foreach($emailList as $line => $value){ 
    if(trim(preg_replace('/\n/', '',$value)) == trim($email)) { 
    $foundMail = true; 
    } 
} 

if(!$foundMail) { 
    file_put_content("email.txt", $email."\n", FILE_APPEND); 
    echo ('your vote has been stored'); 
} else { 
    echo 'you have allready voted'; 
}