[英]What's wrong PHP field check function
I have that function but it's not working. 我有该功能,但无法正常工作。
function Checkfields($fields){
$ret = false;
foreach($fields as $field) {
if ($_POST[$field] == "" || !isset($_POST[$field])) {
$ret = true;
}
}
if ($ret) {
$ret = "All fields are required.";
header('Location: ?erro='. $erro);
}
}
and i use like that: 我这样使用:
Checkfields(array("username","password"));
UPDATED: I already tried to change to: 更新:我已经尝试更改为:
function Checkfields($fields){
$ret = false;
foreach($fields as $field) {
if ($_POST[$field] == "" || !isset($_POST[$field])) {
$ret = true;
}
}
if ($ret) {
$erro = "All fields are required.";
header('Location: ?erro='. $erro);
}
}
and nothing happens. 并没有任何反应。
function Checkfields($fields){
$ret = false;
foreach($fields as $field) {
if (!isset($_POST[$field])) {
$ret = true;
}
}
if ($ret) {
$error = "All fields are required.";
header('Location: ?erro='. $error);
}
}
Exist two bugs in your code validation in variable POST.. if element don't exist appears error 在变量POST中的代码验证中存在两个错误。如果元素不存在,则会出现错误
And when $ret == true 当$ ret == true时
header you put 您放置的标头
$ret = "All fields are required.";
header('Location: ?erro='. $erro);
When redirect to other page don't send response error 重定向到其他页面时不发送响应错误
Why your code is not redirecting , is probably because of the header function call 为什么您的代码不重定向,可能是由于标头函数调用
you may have to call like 您可能必须打电话给
header("Location:http://www.example.com/page.php?erro=$err")
replace example.com/page.php to the page you want it to redirect to. 将example.com/page.php替换为您要重定向到的页面。 As the location basically creates a 302 redirection and the browser will get redirected to the new url.
由于该位置基本上会创建302重定向,因此浏览器将被重定向到新的url。 So you should supply absolute path.
因此,您应该提供绝对路径。
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