在doctype之前PHP包含(),导致空格
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我有一个有空白问题的网站.我在doctype之前包含了一些文件
这导致输出空白区域.
搜索后我找到了这个解决方案：
Problem with whitespace before doctype
但是在删除后？>我仍然遇到问题.以下是代码：
<?php
include ("include/session.php");
include ("include/updatestage.php");
?>
<!DOCTYPE HTML>....
这是session.php：
<?php session_start();
// if a team name has been assigned to a session...
if ( isset($_SESSION ['teamName']))
{
//create "global variable $teamName that can be used across all pages as long as the function "session_start(); is present"
$teamName = $_SESSION ['teamName'];
}
else{
die ( "You are not logged in! Redirecting to login page...<meta http-equiv='REFRESH' content='2; url = index.php'>");
}
这是updatestage.php：
<?php
include("config.php");
//update stage
$inserted="n";
mysql_query ("UPDATE `team` SET `inserted`='$inserted' WHERE teamName = '$teamName' ");
$advance="n";
mysql_query ("UPDATE `game` SET `advance`='$advance' ");
这是getstageinfo.php：
<?php
include("include/config.php");
//Select the slogan from the current user
$currentStage = mysql_query("
SELECT `currentStage` FROM `team` WHERE `teamName` = '$teamName'
");
//assign the text located at the logo field (the path of the logo) to a variable $slogan
$row = mysql_fetch_assoc($currentStage);
$currentStage= $row['currentStage'];
?>
最后这里是config.php：
<?php
// connect to database
$con = mysql_connect("xxxxxxx","xxxxxxx","xxxxxxx");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
// select database
mysql_select_db ("xxxxxxx");
?>
////////////////////////////////////////////////// ////////////////////////////////////////
好的,我已经加入了？>并尝试了以下建议：
<!DOCTYPE HTML>
<?php
include("include/session.php");
include("include/updatestage.php");
?>
或尝试：
<?php
echo "<!DOCTYPE HTML>\n";
include ("include/session.php");
include ("include/updatestage.php");
?>
生产：
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at public_html/period1.php:2) in public_html/include/session.php on line 1
试：
<?php
include("include/session.php");
include("include/updatestage.php");
?><!DOCTYPE HTML>
要么：
<?php
ob_start();
echo "<!DOCTYPE HTML>\n";
include ("include/session.php");
include ("include/updatestage.php");
ob_end_flush();
?>
仍然产生白色空间.
解决方法:
您可以像这样解决问题：
<?php
include ("include/session.php");
include ("include/updatestage.php");
?><!DOCTYPE HTML>
但是我已经观察到了这方面的错误行为(虽然不是自PHP4以来),因此保证修复的最简单的解决方案是放置<！DOCTYPE>在包含之前 – 因为既没有包含文件也没有输出任何内容,如果有的话会破坏你的文档.
<!DOCTYPE HTML>
<?php
include ("include/session.php");
include ("include/updatestage.php");
?>
<!-- Rest of HTML -->
或这个：
<?php
echo "<!DOCTYPE HTML>\n";
include ("include/session.php");
include ("include/updatestage.php");
?>
<!-- Rest of HTML -->
记得要确保<在开头<？php标签是所有文件中的第一个字符,如果你选择第二个选项. 编辑首先完全没有考虑到已经养成丑陋头脑的会话/ cookie问题,这是一个有效的解决方案：
<?php
ob_start();
echo "<!DOCTYPE HTML>\n";
include ("include/session.php");
include ("include/updatestage.php");
ob_end_flush();
?>
<!-- Rest of HTML -->
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