Question

我是PHP的新手。这是我的mailing.php中的代码。当用户提交请求时，有5-7个可选字段和20-25个字段最终未被选中。输出列出所有字段和值，无论它们是空还是已被选中。我知道我需要使用unset或array_filter，但无法弄清楚我需要在代码中插入的方式和位置。

if($_POST && count($_POST)) {

    $body = '';

    foreach($_POST as $key=>$value)
        $body .= $key . ": " . $value . "\r\n";

    mail("email@email.com", "Email Received at email@email.com", $body);

Answer 1

你可以试试这个

if($_POST && count($_POST)) {
     $_POST = array_filter($_POST);
     $body = '';

    foreach($_POST as $key=>$value)
        $body .= $key . ": " . $value . "\r\n";

    mail("email@email.com", "Email Received at email@email.com", $body);

OR

if($_POST && count($_POST)) {
     $body = '';
     foreach($_POST as $key=>$value){
        $trim_value = trim($value);
        if (!empty($trim_value)){
            $body .= $key . ": " . $value . "\r\n";
        }

     }
mail("email@email.com", "Email Received at email@email.com", $body);

Answer 2

在foreach循环之前，你应该使用这个

$_POST = array_filter($_POST);

另一个选择是使用条件内部foreach循环

foreach($_POST as $key=>$value)
    if ($value != '' && $value != null)
        $body .= $key . ": " . $value . "\r\n";

在PHP中的foreach之后删除数组中的空字段

2 个答案: