PHP result display in textbox onClick

I need to get result where PHP generated ID for current button click is displayed in html textfield...

Is there any easy way of doing this?

This is the link of what I am trying to do http://dtech.id.lv/lat.php When user first comes he doesn't have code, so he clicks get code. I need that php generated code is pasted in textbox after this click...

Could someone help? Thank you!

Button clicked, something shows in the text field. Sometimes Javascript isn't necessary.

<?php
$code = "";
if (isset($_POST['buttonId']))
{
    $code = 'Some code here';   
}
?>
<form method="post" >
    <input name="textField" id="textField" type="text" value="<?php echo $code; ?>" />
    <input name="buttonId" id="buttonId" type="submit" value="Submit" />
</form>

Assuming your html looks like this:

<button id="myPHPid">...</button>
<input type="text" id="idRecipient" />

then

<button id="myPHPid" onclick="document.getElementById('idRecipient').value = this.id">...</button>

try this code

$('button').live('click',function() {
    var $butVal= $(this).val();
    alert($butVal);
    $('input#buttonValue').val($butVal);
    return false;
});

live DEMO