[英]PHP: header() and include/include_once/require/require_once
我正在调用header('Location: http : //foo.com/foo/ '); 在调用include()后的文件中包含函数调用的文件(无输出)。 每当我调用include()时,PHP header()重定向均不起作用。 这仅在服务器上发生。 无论我包含哪个PHP文件,都会发生这种情况。 (在开发过程中将本地文件上传到服务器。)
好吧,实际上我在DOCTYPE声明之前得到一个空白字符,这非常糟糕! 无论我包含一两个文件,我都会得到一个空白字符。
Neil@NEILCOMPUTER /c/wamp/www/workspace/worknet
$ curl --verbose http://timescapezonecom.ipage.com/worknet/foo.php
* About to connect() to timescapezonecom.ipage.com port 80 (#0)
* Trying 66.96.147.110... connected
* Connected to timescapezonecom.ipage.com (66.96.147.110) port 80 (#0)
> GET /worknet/foo.php HTTP/1.1
> User-Agent: curl/7.21.1 (i686-pc-mingw32) libcurl/7.21.1 OpenSSL/0.9.8k zlib/1.2.3
> Host: timescapezonecom.ipage.com
> Accept: */*
>
< HTTP/1.1 302 Found
< Date: Sun, 08 Jul 2012 23:19:12 GMT
< Content-Type: text/html; charset=iso-8859-1
< Content-Length: 206
< Connection: close
< Server: Nginx / Varnish
< X-Powered-By: PHP/5.2.17
< Set-Cookie: PHPSESSID=0310603f03176770c3feb46ea93d9fd3; path=/
< Expires: Thu, 19 Nov 1981 08:52:00 GMT
< Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
< Pragma: no-cache
< Location: http://www.google.com
<
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a href="http://www.google.com">here</a>.</p>
</body></html>
* Closing connection #0
另一方面,当我在foo.php中不包含任何文件时,在doctype之前我得到一个零,这也很奇怪:
Neil@NEILCOMPUTER /c/wamp/www/workspace/worknet
$ curl --verbose http://timescapezonecom.ipage.com/worknet/foo.php
* About to connect() to timescapezonecom.ipage.com port 80 (#0)
* Trying 66.96.147.110... connected
* Connected to timescapezonecom.ipage.com (66.96.147.110) port 80 (#0)
> GET /worknet/foo.php HTTP/1.1
> User-Agent: curl/7.21.1 (i686-pc-mingw32) libcurl/7.21.1 OpenSSL/0.9.8k zlib/1.2.3
> Host: timescapezonecom.ipage.com
> Accept: */*
>
< HTTP/1.1 302 Found
< Date: Sun, 08 Jul 2012 23:25:28 GMT
< Content-Type: text/html; charset=iso-8859-1
< Content-Length: 206
< Connection: close
< Server: Nginx / Varnish
< X-Powered-By: PHP/5.2.17
< Set-Cookie: PHPSESSID=98c60264dbcdd024d91bae25db848186; path=/
< Expires: Thu, 19 Nov 1981 08:52:00 GMT
< Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
< Pragma: no-cache
< Location: http://www.google.com
<
0<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a href="http://www.google.com">here</a>.</p>
</body></html>
* Closing connection #0
这是文件foo.php:
<?php
session_start();
// I added the require just to make sure nothing is being printed there
// (an error for example)
// require_once('include/connect.php');
// require_once('include/util.php');
header("Location: " . "http://www.google.com");
exit;
?>
我真的很想知道文件开头的0是从哪里来的。
强烈建议不要对非模板文件使用php的结束标记。
<?php //VERY first line, no whit space
// code
// NO ?> *anywhere*
通常在?>之后是换行符,这会导致您的错误。
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