php - 更专业的错误处理

Question

我有一个联系表，并且通过使用“if”语句逐一检查每个字段来处理错误。我觉得很难，我似乎找不到更好/更有效的方式来使他们工作。如果一个(或多个)为真，我也希望标题显示“错误”。但是我无法让它们与单独的“if”语句一起使用。

这是我的代码:

$name = $_POST['name']; //get data from the form
$email = $_POST['email'];//get data from the form
$message = $_POST['message'];//get data from the form
if($name == ""){
echo"<p class='error'>Please enter a name.</p>";
}
if (!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$",$email)){
echo "<p class='error'>Your email address is not valid.</p>"; 
}
if($message == ""){
echo"<p class='error'>Please enter a message.</p>";
}
else{
echo"all ok, send email code...";   
}

编辑:这些错误是用于窗体的验证。

Answer 1

But I cant get them to work with the separate "if" statements.

只是将错误存储在变量中

$error = array();

if($name == ""){
  $error[] = "Please enter a name.";
}
if (!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$",$email)){
  $error[] = "Your email address is not valid."; 
}
if($message == ""){
 $error[] = "Please enter a message.";
}

if (!$error) {
  // do not echo anything here
  // but send an email
  // and use header("Location:") to redirect a user to thanks page
} else {
  echo "Error";
  foreach ($error as $line) {
    echo "<p class='error'>$line</p>";
  }
}