小编Mr *_*r C的帖子

有没有办法缩写以下内容？

if ($chk == 1 || $chk == 3 || $chk == 5 || $chk == 7){
do some stuff
}

谢谢.

我是否认为下面的陈述将验证$ a是'1'还是'0',而$ b是'x'或'y'

if ($a == '1' && $b == 'x' || $b == 'y')

或者我必须更具体,即

if ($a == '1' && $b == 'x' || $a == '1' && $b == 'y')

我正在尝试根据会话数据为html注册表单中的文本框填写默认的"值"字段.

如果用户在我的注册表单上发生任何错误,则会将其发回,我希望尽可能多地填写他们的数据,而不是将其发送回普通表单以重新开始.

这是我的处理程序脚本检查:

// Let's get the text from the form,.

$username = mysql_real_escape_string($_POST['username']);
$password = mysql_real_escape_string($_POST['password']);
$password_check = mysql_real_escape_string($_POST['pwcheck']);
$email = mysql_real_escape_string($_POST['email']);
$spam_check = mysql_real_escape_string($_POST['checkit']); // spam check
$IP = $_SERVER['REMOTE_ADDR']; // log their ip

// set up some session data for mnistakes or spam or errors
$_SESSION['username'] = $username;
$_SESSION['email'] = $email;

// check for empty info

if ($username == NULL || $username == '') { // no username set
    header ("Location: register.php?p=un"); die;
}
if ($password == …