第七节 GET与POST请求

//get
 if(isset($_GET[‘name‘])&&$_GET[‘name‘])
 {
     echo ‘Hello‘.$_GET[‘name‘];
 }
else
{
    echo ‘请输入名字‘;
}

//post
if($_POST[‘a‘] && $_POST[‘b‘])
{
    echo $_POST[‘a‘]+  $_POST[‘b‘];
}else
{
    echo ‘请输入参数‘;
}

<form action="upload2.php" method="post" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="submit" name="submit">
</form>

$file= $_FILES[‘file‘];
$fileName =  $file[‘name‘];
move_uploaded_file( $file[‘tmp_name‘], $fileName);
echo  "<img src=‘$fileName‘";