Function Help!

Muncey

Ok im not new to PHP but i was a beginner and i stopped for a few months to study.. and now it's just totally gone.

<form action="" method="post">
<table align="left" border="0" cellspacing="0" cellpadding="3">
<tr><td>Password:</td><td><input type="text" name="pass" maxlength="30"></td></tr>
<tr><td colspan="2" align="left"><input type="submit" name="sublogin" value="Login" onclick="checkpass()"></td></tr>
</table>
</form>
<br /><br />

<?php

function checkpass(){
echo "lol";

if($pass == ""){
echo "<br /><br /><br />Correct!";
} else {
echo "<br /><br /><br />Try Again!";
}
}

?>

Basically when i click submit i want it to run the function and then display the echo. This worked when i did it without the function but obviously the pass box is empty when the page is opened so it already displays Correct! so i need it to show the text after the submit button has been pressed.

Thanks in advance.

NogDog

Functions do not get executed unless/until you actually call them.

bradgrafelman

Your problem is that PHP is a server-side language. Meaning all of the PHP parsing and execution is done before the data is sent to the client. After that, PHP's job is done.

If you want something like your script to work, you have to actually submit the data back to the server so that the PHP is executed.

alexd

Here's how to do it by submitting the form to the same page.

Take out the onclick, that's a javascript event and has nothing to do with PHP.

Set the form's action attribute to be the same page... $_SERVER['PHP_SELF']

The variable $pass won't be in the checkpass() function's namespace if registered globals is off (which it should be off), so you'll access it using $_POST['pass'].

And remember, call the function.

Here's your script modified. Maybe this will jog some memory.

<form action="$_SERVER['PHP_SELF']" method="post">
<table align="left" border="0" cellspacing="0" cellpadding="3">
<tr><td>Password:</td><td><input type="text" name="pass" maxlength="30"></td></tr>
<tr><td colspan="2" align="left"><input type="submit" name="sublogin" value="Login"></td></tr>
</table>
</form>
<br /><br />

<?php

if(isset($_POST['pass'])){
    checkpass();
}

function checkpass(){
    echo "lol";

if($_POST['pass'] == ""){
   echo "<br /><br /><br />Correct!";
} else {
    echo "<br /><br /><br />Try Again!";
}
}

?>