How limit user actions in higher/lower game - php

Question

Well, I have created a simple higher/lower game script. Its working fine, but I want to limit the user actions to 3. This means that the user will have to guess the number with 3 moves. On third action I will execute query and save the user to mysql. How I can limit the actions/moves?
<?php
session_start();
function Start_Again() {
$number = rand(1,100);
$_SESSION['higherlower'] = $number;
echo "Select a Number below.";
Display_Form();
}
function Display_Form() {
echo "<table>";
for ($num=1;$num < 101;$num++) {
if (!preg_match("/(.*?)0/", $num)) { echo "<td><a href=\"?number=".$num."\">".$num."</td>"; }
else { echo "<td><a href=\"?number=".$num."\">".$num."</td></tr><tr>"; }
}
echo "</table>";
}
if (isset($_GET['number'])) {
$User_Number = $_GET['number'];
$Actual_Number = $_SESSION['higherlower'];
$count = 0;
if ($User_Number < $Actual_Number) { echo "Higher"; $count + 1; Display_Form(); }
elseif ($User_Number > $Actual_Number) { echo "Lower"; $count + 1; Display_Form(); }
elseif ($User_Number == $Actual_Number) { echo "Bingo, Correct Guess!<br>"; Start_Again(); }
echo $count;
}elseif (!isset($_POST['higherlower'])) { Start_Again(); }
?>

Answer 1

When you initialize the game, simply store the amount of tries in your session.
$_SESSION['tries'] = 3;
Then, when the user picks a number, lower the tries and check if it's 0.
$_SESSION['tries']--;
if ($_SESSION['tries'] <= 0) {
die("Enough! You've been clicking numbers all afternoon.");
}
Full Implementation
<?php
/**
* Higher-lower game
*/
if (!isset($_SESSION)) {
session_start();
}
function Start_Again() {
$number = rand(1,100);
$_SESSION['higherlower'] = $number;
$_SESSION['tries'] = 3;
echo "Select a Number below.";
Display_Form();
}
function Display_Form() {
echo "<table>";
$chunks = array_chunc(range(1, 100), 10);
foreach ($chunks as $chunk) {
echo "<tr>";
foreach ($chunk as $num) {
echo "<td><a href=\"?number=".$num."\">".$num."</td>";
}
echo "</tr>";
}
echo "</table>";
}
if (isset($_GET['number'])) {
$User_Number = $_GET['number'];
$Actual_Number = $_SESSION['higherlower'];
if ($_SESSION['tries'] <= 0) {
die("Oops! You're bad at this!");
}
if ($User_Number < $Actual_Number) { echo "Higher"; $count + 1; Display_Form(); }
elseif ($User_Number > $Actual_Number) { echo "Lower"; $count + 1; Display_Form(); }
elseif ($User_Number == $Actual_Number) { echo "Bingo, Correct Guess!<br>"; Start_Again(); }
$_SESSION['tries']--;
echo $_SESSION['tries'] . 'chances left';
} elseif (!isset($_POST['higherlower'])) {
Start_Again();
}

Answer 2

You are already starting a session so you can store the value in a session variable i.e. $_SESSION['count'];
session_start();
if( !isset( $_SESSION['count] ) ) $_SESSION['count'] = 1;
Later on in the code you will need to update the counter $_SESSION['count']++;
And check whether the person has used up all the guesses
if( $_SESSION['count'] > 3 ) { ..... }