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php - 使用 PHP 设置页面标题

转载 作者：可可西里 更新时间：2023-11-01 13:02:01 25 4
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我希望将我的网页标题设置为 Ultan.me - 无论帖子标题如何。我希望它显示帖子标题。帖子被提交到 MySQL 数据库，标题行称为“title”。对于这个小问题，我们将不胜感激。

更新:

现在是页面本身，但不显示标题。我是否应该打开 php 文档并连接到与当前位置不同的数据库？

代码(唯一必要的部分是开头):

<html>
<head>

<meta name="keywords" content="Mac user Ultan Casey TheCompuGeeks UltanKC">
<title>Ultan.me - <?echo $title;?></title>

<link rel="stylesheet" href="css/styles.css" type="text/css" />
<script type="text/javascript"
src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
<script type="text/javascript" 
src="js/jquery.labelify.js"></script>
<script type="text/javascript">
$(document).ready(function(){
  $(":text").labelify();
});
</script>
<style>
a {text-decoration:none}

</style>
</head>
<body>
<div id="main">

<!-- Menu Start -->
<div id="menu">
<ul>
<li><a href="index.php">home</a></li>
<li><a href="index.php">about me</a></li>
<li><a href="index.php">archives</a></li>
<li><a href="index.php">contact</a></li>
<li><a href="index.php">gallery</a></li>

</ul>
</div>
<!-- Menu End --> 

<img src="images/banner.png" />
<div id="content">
<div id="posts">
<?php
mysql_connect ('localhost', 'root', 'root') ;
mysql_select_db ('ultankc');

if (!isset($_GET['id']) || !is_numeric($_GET['id'])) {
    die("Invalid ID specified.");
}

$id = (int)$_GET['id'];
$sql = "SELECT * FROM php_blog WHERE id='$id' LIMIT 1";

$result = mysql_query($sql) or print ("Can't select entry from table php_blog.<br />" . $sql . "<br />" . mysql_error());

while($row = mysql_fetch_array($result)) {

    $date = date("l F d Y", $row['timestamp']);

    $title = stripslashes($row['title']);
    $entry = stripslashes($row['entry']);
    $get_categories = mysql_query("SELECT * FROM php_blog_categories WHERE `category_id` = $row[category]");
    $category = mysql_fetch_array($get_categories);


    ?>
<p><?php echo "<p id='post-title'><strong><a href=\"post.php?id=". $id . "\">" . $title . "</a></strong></p>"; ?><br /><br />
<div id="entry"><?php echo $entry; ?>
</div><br /><br />
<p id="date">Posted in <a href="category.php?category=<?php echo $row['category']; ?>"><?php echo $category['category_name']; ?></a> on <?php echo $date; ?></p>
</p>
<h2 id="share-title">Share This Post</h2>
<div id="social-share">
<li id="link-right"><a href="http://twitter.com/home?status=
I just read <?php echo $title; ?> at http://ultan.me/post.php?id=<?php echo $id; ?>"><center>Twitter</center></a></li>
<li id="link-left"><a href="http://digg.com/submit?url=http://ultan.me/post.php?id=<?php echo $id; ?>"><center>Digg</center></a></li>
<br>
<li id="link-right"><a href="http://www.facebook.com/sharer.php?u=http://ultan.me/post.php?id=<?php echo $id; ?>&t=<?php echo $title; ?>"><center>Facebook</center></a></li>
<li id="link-left"><a href="http://www.google.com/buzz/post?url=http://ultan.me/post.php?id=<?php echo $id; ?>
"><center>Google Buzz</center></a></li>
<div class="clr"></div>
</div>
<h2 id="comments-title">Comments</h2>
 <div id="comment-list">
    <?php

}
$commenttimestamp = strtotime("now");

$sql = "SELECT * FROM php_blog_comments WHERE entry='$id' ORDER BY timestamp";
$result = mysql_query ($sql) or print ("Can't select comments from table php_blog_comments.<br />" . $sql . "<br />" . mysql_error());
while($row = mysql_fetch_array($result)) {
    $timestamp = date("l F d Y", $row['timestamp']);
      printf("<div class='comment-ind'><p id='comments'><a id='username' href=\"%s\">%s</a> %s</p>", stripslashes($row['url']), stripslashes($row['name']), $timestamp);
    print("<p class='comments'>" . stripslashes($row['comment']) . "</p><div class='clr'><br></div></div>");

  }
?>
<div class="clr"></div>
<form id="commentform" method="post" action="process.php">

<p><input type="hidden" name="entry" id="entry" value="<?php echo $id; ?>" />

<input type="hidden" name="timestamp" id="timestamp" value="<?php echo $commenttimestamp; ?>">

<input type="text" name="name" id="name" title="Name (required)" /><br />

<input type="text" name="email" id="email" title="Mail (will not be published) (required)" /><br />

<input type="text" name="url" id="url" title="Website" value="http://" /><br />

<br />
<textarea  title="Your Comment Goes Here" name="comment" id="comment"></textarea></p>

<p><input type="submit" name="submit_comment" id="submit_comment" value="Add Comment" /></p>

</form>
</div>
<div id="pages">

<?php
$total_results = mysql_fetch_array(mysql_query("SELECT COUNT(*) AS num FROM php_blog"));
$total_pages = ceil($total_results['num'] / $blog_postnumber);
if ($page > 1) {
    $prev = ($page - 1);
    echo "<a href=\"?page=$prev\">&lt;&lt;  Newer</a> ";
}
for($i = 1; $i <= $total_pages; $i++) {
    if ($page == $i) {
        echo "$i ";
    }
    else {
        echo "<a href=\"?page=$i\">$i</a> ";
    }
}
if ($page < $total_pages) {
   $next = ($page + 1);
   echo "<a href=\"?page=$next\">Older &gt;&gt;</a>";
}

?>
</div>
</div>
</div>
<!-- Sidebar Start -->
<div class="sidebar">

<!-- Item 1 -->
<div id="side-item"> 
<h2>
<a href="http://www.dailybooth.com/UltanCasey">
<img src="images/db-icon.jpg">Dailybooth
</a></h2>
<div id="side-item-content">
<center>
<img src="http://dailybooth.com/UltanCasey/latest/medium.jpg" />
</center>
</div>

</div>

<!-- Item 2 -->

<div id="side-item">
<h2><img src="images/connect.jpg" />Connect</h2>
</div>
<div id="side-item-content">
<div class="tweet-title"><p><a href="http://www.twitter.com/UltanKc">Latest Tweet:</a></p></div>
<div id="tweet">
<?php

function getTwitterStatus($userid){
$url = "http://twitter.com/statuses/user_timeline/$userid.xml?count=1";

function auto_link_twitter ($text)
{
    // properly formatted URLs
    $urls = "/(((http[s]?:\/\/)|(www\.))?(([a-z][-a-z0-9]+\.)?[a-z][-a-z0-9]+\.[a-z]+(\.[a-z]{2,2})?)\/?[a-z0-9._\/~#&=;%+?-]+[a-z0-9\/#=?]{1,1})/is";
    $text = preg_replace($urls, " <a href='$1'>$1</a>", $text);

    // URLs without protocols
    $text = preg_replace("/href=\"www/", "href=\"http://www", $text);

    // Twitter usernames
    $twitter = "/@([A-Za-z0-9_]+)/is";
    $text = preg_replace ($twitter, " <a href='http://twitter.com/$1'>@$1</a>", $text);

    // Twitter hashtags
    $hashtag = "/#([A-Aa-z0-9_-]+)/is";
    $text = preg_replace ($hashtag, " <a href='http://hashtags.org/$1'>#$1</a>", $text);
    return $text;
}

$xml = simplexml_load_file($url) or die("could not connect");

       foreach($xml->status as $status){
       $text = $status->text;
       }
       echo auto_link_twitter ($text);
 }


getTwitterStatus("UltanKC");

?>
</div>
<br>
<ul>
<li id="social"><a href="#">YouTube</a></li>
<li id="social"><a href="#">Twitter</a></li>
<li id="social"><a href="#">LastFM</a></li>
<li id="social"><a href="#">Email</a></li>
</ul>

</div>
<!-- Item 2 End-->
<div id="side-item">
<h2><img src="images/archive.jpg" />Archives</h2>
</div>
<div id="archive-side">
<?php
mysql_connect ('localhost', 'root', 'root') ;
mysql_select_db ('ultankc');

$result = mysql_query("SELECT FROM_UNIXTIME(timestamp, '%Y') AS get_year, COUNT(*) AS entries FROM php_blog GROUP BY get_year");

while ($row = mysql_fetch_array($result)) {
    $get_year = $row['get_year'];
    $entries = $row['entries'];

    echo "<li id='tag'><a href=\"archives.php?year=" . $get_year . "\">Entries from " . $get_year . "  (" . $entries . ")<br /></a></li>";
}

$result1 = mysql_query("SELECT * FROM php_blog_categories ORDER BY category_name ASC");

while($row = mysql_fetch_array($result1)) {

    $result2 = mysql_query("SELECT COUNT(`id`) AS entries FROM php_blog WHERE category = $row[category_id]");
    $num_entries = mysql_fetch_array($result2);

    echo '<li id="tag"><a href="category.php?category=' . $row['category_id'] . '">' . $row['category_name'] . ' (' . $num_entries['entries'] . ')</a></li>';

}
?>
</div>

</div>

<div class="clr" />
</div>
<!-- Sidebar End  -->
<div id="footer">
<p> &copy; Ultan Casey 2010</p>
<p style="margin-top: -18px; float:right"><a href="index.php">Home</a> | <a href="about.php">About Me</a> | <a href="mailto:ultankc@thecompugeeks.com">Email Me</a></p>
</div>
</div>
</div>
</body>
</html>
?>

最佳答案

这是我使用的方法(对于类似的事情，不仅仅是标题):

<?
ob_start (); // Buffer output
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">

<head>
<title><!--TITLE--></title>
</head>

<body>
<?
$pageTitle = 'Title of Page'; // Call this in your pages' files to define the page title
?>
</body>
</html>
<?
$pageContents = ob_get_contents (); // Get all the page's HTML into a string
ob_end_clean (); // Wipe the buffer

// Replace <!--TITLE--> with $pageTitle variable contents, and print the HTML
echo str_replace ('<!--TITLE-->', $pageTitle, $pageContents);
?>

PHP 通常会执行任何代码并将所有输出直接打印到浏览器。如果你说 "echo 'Some text here.';" ，该字符串将发送到浏览器并从内存中清空。

输出缓冲的作用是说“将所有输出打印到缓冲区。坚持下去。在我告诉你之前不要向浏览器发送任何东西。”

所以它所做的是将所有页面的 HTML 缓冲到缓冲区中，然后在最后，在标记之后，它使用 ob_get_contents() 获取缓冲区的内容(通常是页面的所有 HTML 源已经发送给浏览器的代码)并将其放入字符串中。

ob_end_clean() 清空缓冲区并释放一些内存。我们不再需要源代码，因为我们只是将它存储在 $pageContents 中。

然后，最后，我在您页面的源代码 ($pageContents) 上对任何 '' 实例进行了简单的查找和替换，并将它们替换为 $pageTitle 变量设置的值。当然，它将替换 <title><!--TITLE--></title>与您页面的标题。之后，我回显 $pageContents，就像浏览器会做的那样。

它有效地保留输出，因此您可以在将其发送到浏览器之前对其进行操作。

希望我的评论足够清楚。如果您想确切地知道它是如何工作的(您应该这样做)，请在 php 手册 ( http://php.net/ob_start ) 中查找 ob_start () :)

关于php - 使用 PHP 设置页面标题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/3463716/

25 4 0
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