我一直在研究如何实现和使用php-include（或require），不幸的是我遇到了一些问题。
我正在为我的班级创建一个网站，并试图将我的引导程序导航栏作为.php文件从外部调用，不幸的是，无论我尝试使用include还是require，它都不起作用。我在谷歌上搜索了一下我遇到了什么潜在的问题，但我还没有发现任何问题。我希望有php经验的人能更容易地发现我遇到的任何错误。
谢谢
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head co$
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="images/favicon.ico">
<title>JR Audi | Audi New & Used Car Dealership</title>
<!-- Bootstrap core CSS -->
<link href="http://getbootstrap.com/dist/css/bootstrap.min.css" rel="styles$
<!-- Custom styles for this template -->
<link href="jraudi.css" rel="stylesheet">
</head>
<!-- NAVBAR
================================================== -->
<body>
<?php require 'navbar.php';?>
<!-- Bootstrap core JavaScript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min$
<script src="http://getbootstrap.com/dist/js/bootstrap.min.js"></script>
<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
<script src="http://getbootstrap.com/assets/js/ie10-viewport-bug-workaround$
</body>
</html>
PHP:
<?php
<!-- Static navbar -->
<nav class="navbar navbar-inverse">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="http://ps11.pstcc.edu/~c2230a11/lab4/jraudi">Home</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">New <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">New Audi Inventory</a></li>
<li><a href="#">Featured New Inventory</a></li>
<li><a href="#">Showroom</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Pre Owned <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Pre Owned Inventory</a></li>
<li><a href="#">Featured Pre Owned Inventory</a></li>
<li><a href="#">Showroom</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Finance <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Finance Application</a></li>
<li><a href="#">Getting Started</a></li>
<li><a href="#">Finance A Vehicle</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/lab3/lab3.html">Ownership Survey</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Service & Parts <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Schedule Service</a></li>
<li><a href="#">Service Center</a></li>
<li><a href="#">Maintenance Schedules</a></li>
<li><a href="#">Parts Center</a></li>
<li><a href="#">Parts Special</a></li>
<li><a href="#">Tire Center</a></li>
<li><a href="#">Audi Roadside Assistance</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Specials <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">New Vehicle Incentives</a></li>
<li><a href="#">Pre-owned Specials</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/certified.html">CPO Specials</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/audi-supplier-program.html">Audi Supplier Program</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/finance.html">Finance Specials</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/service.html">Service Specials</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/parts.html">Parts Specials</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">About <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/about.html">About Us</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/contact.html">Contact and Hours</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/directions.html">Directions</a></li>
<li><a href="http://ps11.pstcc.edu/~c2230a11/website/employment.html">Employment</a></li>
</ul>
</li>
<button onclick="location.href = 'login';" id="Button"
class="btn btn-default navbar-btn pull-right" >LogIn / SignUp</button>
<form class="navbar-form navbar-right" role="search">
<div class="form-group">
<input type="text" class="form-control" placeholder="Year, Make, Model, etc.">
</div>
<button type="submit" class="btn btn-default">Search</button>
</form>
</ul>
</div><!--/.nav-collapse -->
</div><!--/.container-fluid -->
</nav>
?>
从包含文件中删除<?php ?>标记
包含的文件包含<?php开始和?>结束标记，但内容看起来像HTML。只需删除此标签。
我也遇到了这个问题。另一件需要注意的事情是确保文件具有正确的权限。正确的html可能会在终端中打印出来，但不会在浏览器中打印出来。