forward variable to php script on button click - php

Question

I have this HTML button:
<form action="testscript.php" name ="more" method="get">
<input type="submit" value="More Details">
</form>
Which when clicked runs this PHP script:
<?php echo 'button pushed: ';
echo $buttonvalue;
?>
My question is, how to I assign a value to the button so that when its clicked it will forward its value ($buttonvalue) to the PHP script
For example when the button is clicked i want it to run the script and the result should be button pushed: blue
How do i assign "blue" to the button?

Answer 1

you can try this
HTML :
<form action="testscript.php" name ="more" method="get">
<input type="hidden" name="buttonvalue" value="Some Value">
<input type="submit" value="More Details">
</form>
PHP :
<?php
echo 'button pushed: ';
echo !empty($_GET['buttonvalue']) ? $_GET['buttonvalue'] : '';
?>

Answer 2

Use anchor tag with 'btn' class. And pass value to next page with id.
Page 1.
<a class="btn btn-primary" href="next-page.php?id=value">Click me</a>
Page 2.
$buttonvalue = $_GET['id'];
echo $buttonvalue;

Answer 3

<form action="testscript.php" name ="more" method="get">
<input type="hidden" name="getDataName" value="123">
<input type="submit" value="More Details">
</form>
PHP script:
<?php
$buttonvalue= isset ($_GET['getDataName']) ? $_GET['getDataName'] : '';
if(!empty($buttonvalue)){
echo 'button pushed: ';
echo $buttonvalue;
}else{
echo 'button not pushed: ';
}
?>