Hello! I found BUG

Hello! I found BUG

Sorry, I bad speak English.
I wrote the script



/* Generator
<?php
$ucode = rand(1000,10000);
$password = rand(100000,1000000);
?>

/* Form
<form method="post" action="form.php" id="Checker">
<input type="text" name="ucode" value="DF<?=$ucode?>" />
<input type="text" name="password" value="<?=$password?>" />
<input type="submit" name="send" value="SEND" />
</form>

/* H andler form.php

if(($_POST["click"])){
$ucode = clear_string($_POST['ucode']);
$password = clear_string($_POST['password']);
$test = array(
$ucode, 
$password
);
print_r($test);
die();
}

/*  + checker.js and  jquery.validate.js

$(document).ready(function(){
$('#check_form').validate(
{
rules:{
"ucode":{
remote:{
type: "post",
url: "lib/check_data.php"
}
},
"password":{
minlength:5,
maxlength:9
}
},
messages:{
"ucode":{
remote: "UCode in busy!"
},
"password":{
minlength: "min 5",
maxlength: "max 9"
}
}
});
});


if in HTML code, in <input> set value="symbol or number", or (value="<?=$ucode?> and value="<?=$password?>)" 

The script assumes that the value is empty and does not transmit data.

if the browser window to add symbols manually and click the SEND button - the data has been successfully transmitted