好吧，我正在做一个论坛项目，遇到了一个障碍。将我的所有文件上传到wamp并开始安装过程都很顺利。然而，当我将相同的文件上传到我的实时网站（使用whm&cpanel）时，我会完成安装过程，当我到达index_3.php并键入所有服务器信息时，我单击"继续"并弹出白色屏幕，没有错误。我检查了我的php.ini并打开了显示错误，但什么都没有。已检查cpanel错误日志，没有任何内容。。。
我的index_3.php文件：
<?php if (!file_exists( "install.txt")){ die( "Installer locked."); } ?>
<!doctype html>
<html>
<head>
<title>forum Installer - Step 3 of 7</title>
<link rel="stylesheet" type="text/css" href="css/installer.css" />
</head>
<body>
<div id="wrap">
<img src="images/mbbinstall_logo.png" />
<div id="container">
<div id="menu">
<a href="#" class="current">
<img src="images/green/welcome.png" alt="Y">Welcome to forum!</a>
<a href="#" class="current">
<img src="images/green/percheck.png" alt="Y">Check Permissions</a>
<a href="#" class="current">
<img src="images/grey/mysql.png" alt="Y">Configure MySQL</a>
<a href="#">
<img src="images/grey/settings.png" alt="N">Configure Settings</a>
<a href="#">
<img src="images/grey/table.png" alt="N">Install Tables</a>
<a href="#">
<img src="images/grey/account.png" alt="N">Create Admin Account</a>
<a href="#">
<img src="images/grey/forum.png" alt="N">Your New Forum</a>
</div>
<div id="content">
<div class="title">forum MySQL Configuration</div>
<div class="title2">Step 3 of 7</div>
<?php if (isset($_GET[ "error"])){ echo "<div class='"error' ">Error accessing the MySQL database. Re-check database information. :[</div>"; } ?>
<div class="box">
<form action="index_4.php" method="post">
Database Host
<br />
<span style="font-size:11px;">Commonly localhost, external MySQL servers may differ.</span>
<div class="clear"></div>
<input type="text" name="host" size="40" value="localhost">
<br />
<br />Database Username
<br />
<span style="font-size:11px;">The username you configured for your MySQL database.</span>
<div class="clear"></div>
<input type="text" name="user" size="40">
<br />
<br />Database Password
<br />
<span style="font-size:11px;">The password you configured for your MySQL database.</span>
<div class="clear"></div>
<input type="text" name="pass" size="40">
<br />
<br />Database Name
<br />
<span style="font-size:11px;">The name you configured for your MySQL database.</span>
<div class="clear"></div>
<input type="text" name="name" size="40">
<br />
<br />Password Key
<br />
<span style="font-size:11px;">A unique and random key to encrypt user passwords.</span>
<div class="clear"></div>
<input type="text" name="pass_key" size="40">
<br />
<br />
<input type="submit" class="button" value="Continue">
</form>
</div>
</div>
</div>
<div id="footer">
<div style="float:left;">
minstaller v1.2 - Powered by: <a href='http://www.forum.net'>Bulletin Board</a>
</div>
<div style="float:right;">
<a href="http://www.forum.net/docs" target="_blank" style="color:#808080;">I need help!</a>
</div>
</div>
</div>
</body>
</html>这是我的index_4.php文件，在index_3.php之后变为白色：
<?php if (!file_exists( "install.txt")){ die( "Installer locked."); } ?>
<?php # Database Connection if ($_POST[ "host"] !=n ull && $_POST[ "user"] !=n ull && $_POST[ "pass"] !=n ull && $_POST[ "name"] !=n ull && $_POST[ "pass_key"] !=n ull) { $mysqli=@ new mysqli($_POST[ "host"], $_POST[ "user"], $_POST[ "pass"], $_POST[
"name"]); } else { header( 'location: ./index_3.php?error=1'); exit(); } if (mysqli_connect_errno()) { header( 'location: ./index_3.php?error=1'); exit(); } else { $config_file='<?php
/*******************
| forum software
| powered by forum 1.2
*******************/
if(!defined("access")){ include("errors/access.html"); exit(); }
/*******************
| The following settings are related
| to the MySQL side of the application
*******************/
$DB_NAME = "' . $_POST[ "name"] . '"; // Your database name
$DB_HOST = "' . $_POST[ "host"] . '"; // Your database host
$DB_USER = "' . $_POST[ "user"] . '"; // Your database username
$DB_PASS = "' . $_POST[ "pass"] . '"; // Your database password
// Please change the following key to a secure phrase - do not modify after board installation
$config["password_key"] = "' . $_POST[ "pass_key"] . '";
?>
'; $write_config=f open( "../forum/db_config.php", "w"); fwrite($write_config, $config_file); fclose($write_config); } ?>
<!doctype html>
<html>
<head>
<title>forum Installer - Step 3 of 7</title>
<link rel="stylesheet" type="text/css" href="css/installer.css" />
</head>
<body>
<div id="wrap">
<img src="images/mbbinstall_logo.png" />
<div id="container">
<div id="menu">
<a href="#" class="current">
<img src="images/green/welcome.png" alt="Y">Welcome to forum!</a>
<a href="#" class="current">
<img src="images/green/percheck.png" alt="Y">Check Permissions</a>
<a href="#" class="current">
<img src="images/grey/mysql.png" alt="Y">Configure MySQL</a>
<a href="#">
<img src="images/grey/settings.png" alt="N">Configure Settings</a>
<a href="#">
<img src="images/grey/table.png" alt="N">Install Tables</a>
<a href="#">
<img src="images/grey/account.png" alt="N">Create Admin Account</a>
<a href="#">
<img src="images/grey/forum.png" alt="N">Your New Forum</a>
</div>
<div id="content">
<div class="title">forum MySQL Configuration</div>
<div class="title2">Step 3 of 7</div>
<div class="box2">
forum has successfully connected to your MySQL database. Next we are ready to configure your board settings! Click "Configure Settings" to begin your board configuration.
<br />
<br />
</div>
<div style="float:right;">
<a href="index_5.php" class="button">Configure Settings</a>
</div>
</div>
</div>
<div id="footer">
<div style="float:left;">
forum installer v1.2 - Powered by: <a href='https://forum.net'>forum Bulletin Board</a>
</div>
<div style="float:right;">
<a href="https://forum.net/docs.html" target="_blank" style="color:#808080;"> I need help!</a>
</div>
</div>
</body>
</html>我不知道您的代码如何在您的开发环境中工作。有一个PHP语法错误：
'; $write_config=f open( "../forum/db_config.php", "w"); fwrite($write_config, $config_file); fclose($write_config); } ?>
必须是
'; $write_config=fopen( "../forum/db_config.php", "w"); fwrite($write_config, $config_file); fclose($write_config); } ?>
（"f"answers"open"之间没有空格）
无论如何：如果您想调试这样的错误，请确保error_reporting已设置为E_ALL。您可能还需要检查服务器错误日志。