我正在研究一个简单的"命运之轮"风格的算法。正确答案存储在$phrase中，用户可以提交一封信来猜测短语的一部分。
我的问题是，每次用户提交他们的猜测时，我的会话数组都会被吹走，并且不会像我希望的那样动态更新。
因此，理想情况下，如果答案是"boat"，而用户的第一个猜测是"o"，则显示以下内容："#o##
第二个猜测是"t"，下面显示："#o#t"
如有任何建议或意见，我们将不胜感激。
<!doctype html>
<?php session_start();?>
<html>
<head>
<meta charset="UTF-8">
<title>Untitled Document</title>
</head>
<body>
<!-- Form for user guess input -->
<form method="post" action="wof2.php">
Input Letter: <input type="text" name="usr_guess">
<input type="submit" value="submit">
</form><br/><br/><br/>
<?php
// Set the phrase
$phrase = "The Terminator";
// Dump phrase into an array
$split = str_split($phrase);
// Counter used in the comparrison
$count = 0;
if (!isset($_SESSION['answer'])) {
$_SESSION['answer'] = array();
foreach ($split as $char) {
array_push($_SESSION['answer'], $char);
}
}
if (isset($_POST['usr_guess'])) {
// User's guess
$usr_guess = $_POST['usr_guess'];
foreach ($split as $char) {
// Compares user guess to the answer and sets the answer in count position
if ($usr_guess == $char) {
$_SESSION['answer'][$count] = $usr_guess;
$count++;
}
else { // Checks for breaks in the word, used in accurately displaying spaces between words or # if it is a character
if ($split[$count] == " ") {
$_SESSION['answer'][$count] = " ";
$count++;
}
else {
$_SESSION['answer'][$count] = "#";
$count++;
}
}
}
}
?>
</body>
</html>
今天早上，我简化了代码，终于解决了这个问题。我不断地重写会话数组的所有内容，而不仅仅是匹配字符，这让我自己陷入了困境。我的下一步是将图像文件链接到每个字符，这样它就可以显示图形，而不仅仅是普通的html。
<?php
// ***************************************** Game Initialization ***************************************
// Set the phrase
$phrase = "The Terminator";
// Dump phrase into an array
$split = str_split($phrase);
// If Session array doesn't already exist, create it and dump each character of the phrase into it
if (!isset($_SESSION['answer'])) {
$_SESSION['answer'] = array();
foreach ($split as $char) {
array_push($_SESSION['answer'], $char);
}
$counter = 0; // Counter used to assign hidden characters to the phrase, change array contents " " if a space, "*" if a character
foreach ($_SESSION['answer'] as $char) {
if ($char == " ") {
$_SESSION['answer'][$counter] = " ";
$counter++;
}
else {
$_SESSION['answer'][$counter] = "*";
$counter++;
}
}
}
// ********************************************** Comparing Algorithm ***************************
// Counter used in the comparrison algorithm
$count = 0;
// Check if user has submitted a guess
if (isset($_POST['usr_guess'])) {
// Dump user's guess into a variable
$usr_guess = $_POST['usr_guess'];
foreach ($split as $char) {
// Compares user guess to the answer and sets the answer in count position
if ($usr_guess == $char) {
$_SESSION['answer'][$count] = $usr_guess;
echo $_SESSION['answer'][$count];
$count++;
}
else {
echo $_SESSION['answer'][$count];
$count++;
}
}
}
?>
您应该存储所有内容并对照存储的值进行检查。
// Set the phrase
$phrase = "The Terminator";
// Dump phrase into an array
$split = str_split($phrase);
// Set container if not set
if(!isset($_SESSION['phrase'])) {
// Save phrase
$_SESSION['phrase']['full'] = $phrase;
// Split phrase for checking
$_SESSION['phrase']['split'] = $split;
}
// If guess set, attempt process
if (isset($_POST['usr_guess'])) {
// If not already in array, process
if(!in_array($_POST['usr_guess'],$_SESSION['guess']))
// Store each guess
$_SESSION['guess'][] = strip_tags($_POST['usr_guess']);
}
// Set a container array for letter to phrase storage
// For each letter check if there are spaces
foreach($_SESSION['phrase']['split'] as $_letter) {
if(preg_match("/''s/",$_letter))
$_comp[] = " ";
// No spaces, check if instance of upper or lowercase letter in phrase
else
$_comp[] = (preg_grep("/".$_letter."/i",$_SESSION['guess']))? $_letter: '#';
}
// If no instances of # are in comp, juse echo saved phrase
if(!in_array("#",$_comp))
echo $_SESSION['phrase']['full'];
// If # in comp, implode the current comp array
else
echo ucwords(implode("",$_comp));
这是一个类版本（仅供参考）
class VannaWhite
{
public static function Play($phrase) {
// Dump phrase into an array
$split = str_split($phrase);
// Set container if not set
if(!isset($_SESSION['phrase'])) {
// Save phrase
$_SESSION['phrase']['full'] = $phrase;
// Split phrase for checking
$_SESSION['phrase']['split'] = $split;
}
// If guess set, attempt process
if (isset($_POST['usr_guess'])) {
// If not already in array, process
if(!in_array($_POST['usr_guess'],$_SESSION['guess']))
// Store each guess
$_SESSION['guess'][] = strip_tags($_POST['usr_guess']);
}
// Set a container array for letter to phrase storage
// For each letter check if there are spaces
foreach($_SESSION['phrase']['split'] as $_letter) {
if(preg_match("/''s/",$_letter))
$_comp[] = " ";
// No spaces, check if instance of upper or lowercase letter in phrase
else
$_comp[] = (preg_grep("/".$_letter."/i",$_SESSION['guess']))? $_letter: '#';
}
// If no instances of # are in comp, juse echo saved phrase
if(!in_array("#",$_comp)) {
echo $_SESSION['phrase']['full'];
// Unset the session arrays ready for new word/phrase
self::Clear();
}
// If # in comp, implode the current comp array
else
echo ucwords(implode("",$_comp));
}
protected static function Clear()
{
unset($_SESSION['phrase'],$_SESSION['guess'],$_SESSION['answer']);
}
}
// Create Instance
VannaWhite::Play("The Terminator");