php - 无法发送邮件，找不到错误

Question

Fetching Varialble  
 <?php
    
    $InqName=$_REQUEST['InqName'];
    $InqEmail=$_REQUEST['InqEmail'];
    $InqMessage=$_REQUEST['InqMessage'];

**COndition**
    
    if (empty($InqName) || empty($InqEmail) || empty($InqMessage))
    {
    echo "Please Fill In All The Respective Fields";
    }
    
    else
    {
    mail("[e-mail]", "Inquiry" ,$InqMessage, "From: $InqName <$InqEmail>");
    echo "<script type='text/javascript'>alert('Your Message Has Been Sent!');
    window.history.go(-1);
    </script>";
    }
    ?>

标签： phpemail