正如您已经指出的那样,您不必将标志设置为“OK”或屏蔽先前的错误。如果所有检查都正常,则标志保持有效状态,您可以继续,否则,如果其中一项检查失败,则标志报告不正确的状态。
$flag="OK"; // This is the flag and we set it to OK
$msg=""; // Initializing the message to hold the error messages
if(isset($_POST['Send'])) {
$key=substr($_SESSION['key'],0,4);
$num_key = $_POST['num_key'];
if($key!=$num_key){
$msg=$msg."Your Key not valid! Please try again!<BR>";
$flag="NOTOK";
} else {
$msg=$msg."Your Key is valid!<BR>";
}
}
$email=$_POST['email'];
echo "Your Email: ".$email." is";
if (!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email)){
$msg=$msg."Invalid email<BR>";
$flag="NOTOK";
}else{
$msg=$msg."Valid Email<BR>";
}
$password=$_POST['password'];
if(strlen($password) < 5 ){
$msg=$msg."( Please enter password of more than 5 character length )<BR>";
$flag="NOTOK";
}
if($flag <>"OK"){
echo "$msg <br> <input type='button' value='Retry' onClick='history.go(-1)'>";
} else {
// all entries are correct and let us proceed with the database checking etc …
}
说我会使用不同的方法,例如使用布尔值而不是名为 flag 的字符串。您可以获得更流畅的代码,将其称为 $inputIsvalid。
其他唠叨:有时您将消息添加到 $msg 变量,其他您发出回声,也许这是一个疏忽。
有很大的改进空间,就像所有其他代码一样,我将只解决一些简单的问题,例如我不会检查变量是否已设置。
$inputIsValid=true; // This is the flag and we set it to OK
$messages = array(); // Initializing the message to hold the error messages
if(isset($_POST['Send'])) {
$key=substr($_SESSION['key'],0,4);
$num_key = $_POST['num_key'];
if($key!=$num_key){
$messages[]= 'Your Key not valid! Please try again!';
$inputIsValid=false;
} else {
$messages[]'Your Key is valid!';
}
}
$email=$_POST['email'];
$emailRegex='^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$';
$emailIsValid = eregi($emailRegEx, $email);
$messages[]= 'Your Email: '.$email.' is ' .($emailIsValid? 'Valid':'Invalid');
$inputIsValid = $inputIsValid && emailIsValid;
$password=$_POST['password'];
if(strlen($password) < 5 ){
$messages[]='( Please enter password of more than 5 character length )';
$inputIsValid=false;
}
if(!inputIsValid){
$messages[]='<input type='button' value='Retry' onClick='history.go(-1)'>';
echo join('<br/>', $messages);
} else {
// all entries are correct and let us proceed with the database checking etc …
}
另一种方法应该是(功能很简单,但可以修改不同组件的验证策略而不影响主代码):
function validateKey() {
if(!isset($_POST['Send'])) {
return true;
}
$key=substr($_SESSION['key'],0,4);
$num_key = $_POST['num_key'];
return $key==$num_key;
}
function validateEmail($email) {
$emailRegex='^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$';
return eregi($emailRegEx, $email);
}
function validatePassword($password) {
return strlen($password) < 5;
}
$inputIsValid=true; // This is the flag and we set it to OK
$messages = array(); // Initializing the message to hold the error messages
if(validateKey()) {
$messages[]'Your Key is valid!';
} else {
$messages[]= 'Your Key not valid! Please try again!';
$inputIsValid=false;
}
$emailIsValid = validateEmail($_POST['email']);
$messages[]= 'Your Email: '.$email.' is ' .($emailIsValid? 'Valid':'Invalid');
$inputIsValid = $inputIsValid && emailIsValid;
$password=;
if(!validatePassword($_POST['password']){
$messages[]='( Please enter password of more than 5 character length )';
$inputIsValid=false;
}
if(!inputIsValid){
$messages[]='<input type='button' value='Retry' onClick='history.go(-1)'>';
echo join('<br/>', $messages);
} else {
// all entries are correct and let us proceed with the database checking etc …
}
垃圾邮件功能:
为什么你使用与布尔值不同的常量?(TRUE 与 true 不同,FALSE 与 false 不同)您可以像这样重写函数以获得所需的行为。
function spamcheck($field)
{
$field=filter_var($field, FILTER_SANITIZE_EMAIL);
return filter_var($field, FILTER_VALIDATE_EMAIL);
}
if (isset($_POST['email'])) {//if "email" is filled out, proceed
$mailcheck = spamcheck($_POST['email']);
if (!$mailcheck) {
echo "Invalid input";
}
}