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up vote -3 down vote favorite

I was trying to make a contact form, but I have some problems :p I have read that the only way to pass a javascript variable to php is via ajax. I have tried some advices from stackoverflow, but nothing worked. So this is my code and I want your opinion. How will I pass tha Javascript variable (jTemp2) to php?

sample.html

<!DOCTYPE html>
<html>
<head>

<title> Hello World </title>

</head>
<body>
<?php

// define variables and set to empty values
$fNameErr =  "";
$fName = "";
$temp = 0; //flag for mail
$temp2=0; //flag for button


if ($_SERVER["REQUEST_METHOD"] == "POST") {
    if (empty($_POST["fName"])) {
        $fNameErr = "Required";
        $temp=1;
        //echo $temp;
    } else {
        $fName = test_input($_POST["fName"]);
        // check if fName only contains letters and whitespace
        if (!preg_match("/^[a-zA-Z ]*$/", $fName)) {
            $fNameErr = "Invalid"; 
            $temp=1;
        }
    }
}    

function test_input($data)
{
     $data = trim($data);
     $data = stripslashes($data);
     $data = htmlspecialchars($data);
     return $data;
}


?>
<script>
    var jTemp2 = "<?php echo $temp2; ?>";
</script>


<form method="POST" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"  id="form1" onsubmit="myFunction(jTemp2)">
<fieldset class="fiel">
<legend><b><span class="words">Contact</span></b></legend>
<table border="0">
<tr><td><b><span class="words"> Name: </span></b></td><td><input type="text" size="30" name="fName" id="fName" value="<?php echo $fName;?>"><span class="words"> *</span></td><td><span class="error"> <?php echo $fNameErr;?></span></td></tr>

<tr><td></td><td id="but"><input type="submit" value="Υποβολή" ></td></tr>
<tr><span class="words">* Required</span></tr>
<tr><td><span ><?php echo $temp; echo $temp2;  ?></span></td></tr>
</table>
</fieldset>
</form>


    <script>
    function myFunction(jTemp2)
    {
        jTemp2++;
    }
    </script>

    </body>
    </html>
share|improve this question
 
possible duplicate of How to pass JavaScript variables to PHP? –  DontVoteMeDown Oct 17 '13 at 13:16
 
You could also do the ++ in php on your $temp2 variable like this: $temp2++; –  Joran Den Houting Oct 17 '13 at 13:17
2  
your file extension says sample.html though you have php code in it..woww.. –  Joke_Sense10 Oct 17 '13 at 13:20
 
Can you give further details about what you're trying to do? –  Sahil Sakhuja Oct 17 '13 at 13:33
 
@Joke_Sense10 You know the PHP interpreter doesn't care what filename you feed it? –  DanFromGermany Oct 17 '13 at 13:37
show 2 more comments

1 Answer

up vote 1 down vote

Add this inside your <form> ... </form>

<script type="text/javascript">
     document.write('<input type="hidden" name="jTemp2" value="'+ jTemp2  +'">');
</script>

Now, when the form is posted to your PHP script, the variable's value will be inside:

<?php

$jTemp2 = isset($_POST['jTemp2']) ? $_POST['jTemp2'] : '';

?>
share|improve this answer
 
@DanFromGermany thanks, post updated. –  Latheesan Kanes Oct 17 '13 at 13:28
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