How to save entries into db on submit button click only - php

Question

I have a code like this
<?php
if ( $thismemberinfo[msurf] >= $msurfclicks ) {
$sql=$Db1->query("INSERT INTO d_bonus VALUES('$userid','0.02',NOW())");
echo "success";
} else {
echo "wrong";
}
?>
<form action="" method="post" name="myform">
<input type="hidden" value="123" name="match">
<input type="submit" value="Claim your daily bonus $o.o2" name="submit1">
</form>
I want to save values into db after user clicks the submit button. I have been trying different approaches, but still could not get near to it.
Any ideas/hints what I should do next or doing wrong?
After the given suggesstion below is my code :
<form action="" method="post" name="myform">
<input type="hidden" value="123" name="match">
<input type="submit" value="Claim your daily bonus $o.o2" name="submit1">
</form>
<?php
if(isset($_REQUEST['submit1']))
{
echo "$thismemberinfo[msurf]";
echo " $msurfclicks";
if ( $thismemberinfo[msurf] >= $msurfclicks ) {
//$sql=$Db1->query("INSERT INTO d_bonus VALUES('$userid','0.02',NOW())");
echo "success";
}
else
{
echo " not set " ;
}
}
?>

Answer 1

you can use isset for checking if button is clicked or not
if(isset($_REQUEST['submit1']))
{
if ( $thismemberinfo[msurf] >= $msurfclicks ) {
$sql=$Db1->query("INSERT INTO d_bonus VALUES('$userid','0.02',NOW())");
echo "success";
}
else
{
echo "wrong";
}
header("location:".$_SERVER['PHP_SELF']);
}

Answer 2

You need to check if the request has come from the post submit i.e. as others pointed check $_POST['submit']
if(isset( $_POST['submit'] ) {
// your complete rest php code goes here to insert the record
}
On page refresh, it'll see the request is not a post request submitted hence won't execute the php code in the if and will just display the page.

Answer 3

Your code is missing a few things..
To insert entries into the database, you should think more about what tasks need to be carried out, I'll give you a list of them, you have probably done some of these.
1) Connect to the database.
2) Obtain the values entered into the form, and store them in local variables, in your case you have used POST on your form and therefore.. here's an example:
$Field1 = mysql_real_escape_string($_POST['match']); // match?? This post data comes from the name field of your form.
3) Create your query... e.g..
$sql = "INSERT INTO table_name (table_heading) VALUES ('$Field1')";
4) Run the query