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我正在構建一個猜數字遊戲，並需要創建一個會話變量來保存隨機目標號碼，直到用戶提交正確的猜測。我還需要輸出用戶提交正確答案後的嘗試次數。無法從會話變量檢索數據 - PHP猜數字遊戲
我設置了我的會話變量，並使用隱藏字段來保存計數器。我不知道當我提交猜測時隱藏字段是否工作，我的代碼打印出check（）函數的第一條if語句..ALL THE TIME。
我認爲它與會話變量（當然我的代碼）有關，但我無法弄清楚。我已經爲此工作了兩天，並感到沮喪。任何幫助將是驚人的。這裏是我的下面全碼：
<?php session_start() ?>
<!DOCTYPE HTML>
<html>
<head>
<title>Number Guessing Game</title>
</head>
<body>
<h1>Guess the number</h1>
<p>I'm thinking of a number between 1 and 5. Can you guess what it is?<br>
In less than 3 tries?</p>
<?php
extract($_REQUEST);
error_reporting(E_ALL & ~E_NOTICE);
// check to see if this is start of game
if (filter_has_var(INPUT_POST, "guess")) {
check();
} else {
setTarget();
} //end if
// set targetNum session variable
// increment counter by 1
function setTarget() {
$targetNum = rand(1, 5);
$_SESSION["targetNum"] = $targetNum;
$counter++;
print <<<HERE
<form action="" method="post">
<input type = "text"
name = "guess">
<input type = "hidden"
name = "counter"
value = "$counter">
<h2>Target Number: $targetNum</h2>
<h3>The counter is at: $counter</h3>
<br>
<button type = "submit">
SUBMIT GUESS
</button>
</form>
HERE;
}
function check() {
global $counter;
print <<<HERE
<form action="" method="post">
<input type = "text"
name = "guess"
value= "$guess">
<input type = "hidden"
name = "counter"
value = "$counter">
<h2>Target Number: $targetNum</h2>
<h3>The counter is at: $counter</h3>
<br>
<button type = "submit">
SUBMIT GUESS
</button>
</form>
HERE;
if ($guess == $_SESSION['$targetNum']) {
print "<h3>Awesome. You guessed it in $counter attempt(s)</h3>";
unset($_SESSION["targetNum"]);
$count = 0;
print "<a href='numberGuessingGame.php'>TRY AGAIN</a>";
} else if ($guess > $_SESSION['$targetNum']) {
print "<h3>Too high. Guess again.</h3>";
} else if ($guess < $_SESSION['$targetNum']) {
print "<h3>Too low. Guess again.</h3>";
} else {
print "I don't know what that is...";
}
}
?>
</body>
</html>