我正在尝试编写注册表单并在运行SQL查询之前进行一些检查，但是当我测试并尝试生成多个错误时，我只得到第一个错误，或者有时没有错误。我无法找到我犯错误的地方。 以下是PHP中的代码。
//function to filter only phone numbers
function get_phone($number) {
return preg_replace('#[^0-9]#', '', $number);
}
//function to take only alphabets.
function get_alpha($alphabets){
return preg_replace('#[^a-z]#', '', $alphabets);
}
//function to check email.
function isValidEmail($email){
if (strlen ($email) > 50){
$errors[] = 'email address too long, please use a shorter email address..!';
} else {
return (filter_var($email, FILTER_VALIDATE_EMAIL));
}
}
function output_errors($errors){
$output = array();
foreach($errors as $error) {
$output[] = '<li>' . $error . '</li>';
}
return '<ul>' . implode('', $output) . '</ul>';
}
if (empty($_POST) === false) {
//store the text box field names of the form to local variables.
$cust_name = $_POST['name1'];
$cust_email = $_POST['email'];
$cust_phone = $_POST['phone'];
$cust_addr1 = $_POST['addr1'];
$cust_addr2 = $_POST['addr2'];
$cust_city = $_POST['city'];
$cust_state = $_POST['state'];
$cust_country = $_POST['country'];
$username = $_POST['uname'];
$password = $_POST['passwd'];
$cnf_passwd = $_POST['cnf_passwd'];
$sec_que = $_POST['sec_que'];
$sec_ans = $_POST['sec_ans'];
//sanitize the inputs from the users end.
$cust_name = sanitize($username);
$cust_phone = get_phone($cust_phone);
$cust_addr1 = sanitize($cust_addr1);
$cust_addr2 = sanitize($cust_addr2);
$cust_city = get_alpha($cust_city);
$cust_state = get_alpha($cust_state);
$cust_country = get_alpha($cust_country);
$username = sanitize($username);
$password = md5($password);
$cnf_passwd = md5($cnf_passwd);
$sec_que = sanitize($sec_que); //put up dropdown menu
$sec_ans = sanitize($sec_ans);
$cust_email = isValidEmail($cust_email);
//check for error handling in form data
//1. check for empty fields,
if ($cust_name == "" || $cust_phone == "" ||
$cust_addr1 == "" || $username == "" ||
$password == "" || $cnf_passwd == "" ||
$sec_que == "" || $sec_ans == ""
) {
$errors[] = 'No blank fields allowed, please fill out all the required fields..!';
//2.check for field lengths
} else if (strlen($cust_name) < 3 || strlen($cust_name > 20)) {
$errors[] = 'The name length should be between 3 to 20, please check & correct..!';
//3. check for phone number length
} else if (strlen($cust_phone) < 10 || strlen($cust_phone) > 11) {
$errors[] = 'The phone number must be 10 or 11 digits..!';
//4. check for address input lengths.
} else if (strlen($cust_addr1) < 5 || strlen($cust_addr1) > 50) {
$errors[] = 'Please provide a valid address..to serve you better..!';
//5. check if the password fields content match.
//length is not checked because the entered values will be converted to MD5 hash
// of 32 characters.
} else if ($password != $cnf_passwd) {
$errors[] = 'The passwords do not match. Please enter your passwords again..!';
// 6. check for length of the security answers.
} else if (strlen($sec_ans) < 5 || strlen($sec_ans) > 50) {
$errors[] = 'Please enter a proper security answer..!';
} //7. check for valid email address
else if($cust_email == false){
$errors[] = 'The email address you entered is not valid, please check and correct..!';
} else {
execute the SQL queries and enter the values in the database.
echo 'GOOD...TILL NOW..!!!';
}
} else {
$errors [] = 'No data received, Please try again..!!';
}
if(empty($errors) === false) {
?>
<h2>The Following errors were encountered:</h2>
<?php
echo output_errors($errors); //output the errors in an ordered way.
}
?>
答案 0 :(得分：0)
使用此结构时：
if () {
} else if () {
} else if () {
}
// etc.
然后只能满足一个条件。只要其中一个if条件为真，其余else if块和最终else块都将被忽略。
如果您的条件不相互排斥，请将它们放在各自独立的区块中：
if () {
}
if () {
}
if () {
}
// etc.