用php隐藏表单代码检查[关闭]

I think this is quite simple I'm trying to hide a form if an event is full, this is my code:

var_dump($errorflag);
var_dump($registered , $limit);
if ($registered>$limit) {
$errorflag="1";
}
event=$event&eventlocation=$eventlocation&eventdate=$eventdate")
var_dump($errorflag); 

and the code to hide the form:

?php  if ($errorflag=="1") {
          echo "style=\'display:none;\'";
      };
      ?>

There are several syntax problems here. This line is ambiguous:

event=$event&eventlocation=$eventlocation&eventdate=$eventdate")

There's no $ before event - is that a variable? Also the line does not end with a ; but has a trailing ) that doesn't match any opening (.

Finally, this line:

?php if ($errorflag=="1") {
      echo "style=\'display:none;\'";
  };

Should be:

<?php if ($errorflag=="1") {
      echo "style=\'display:none;\'";
  } 
?>