我想要以下代码header ('Location:'. $U);
正确的指导，但我得到了以下警告，如何解决它。
Warning: Cannot modify header information - headers already sent by (output started at H:'xampp'htdocs'redirected'index.php:8) in H:'xampp'htdocs'redirected'index.php on line 53
我想要：
http://mydomian/google redirect to http://google.com
或
http://mydomian/yahoo redirect to http://yahoo.com
或
http://mydomian/anyname redirect to http://Every site that I like
我的htaccess文件：
<Files ~ "^'.(htaccess|htpasswd)$">
deny from all
</Files>
ErrorDocument 404 /redirected/index.php
order deny,allow
在重定向文件夹中，我有文件index.php和htaccess.txt：
htaccess.txt：
/google http://google.com
/yahoo http://yahoo.com
index.php:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>script for redirect !!!</title>
</head>
<body>
<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
<input type="text" name="url" placeholder="e.g google.com" required/>
<input type="text" name="dir" placeholder="dir" value=<?php echo htmlspecialchars($_SERVER['REQUEST_URI']);?> required/>
<input type="submit" />
</form>
<?php
$url = (isset($_POST['url'])) ? $_POST['url'] : '';
$dir = (isset($_POST['dir'])) ? $_POST['dir'] : '';
$filename = 'htaccess.txt';
/*
*
* Function to make URLs into links
*
* @param string The url string
*
* @return string
*
*/
function makeLink($string){
/*** make sure there is an http:// on all URLs ***/
$string = preg_replace("/([^'w'/])(www'.[a-z0-9'-]+'.[a-z0-9'-]+)/i", "$1http://$2",$string);
/*** make all URLs links ***/
$string = preg_replace("/(['w]+:'/'/['w-?&;#~='.'/'@]+['w'/])/i","<a target='"_blank'" href='"$1'">$1</A>",$string);
/*** make all emails hot links ***/
$string = preg_replace("/(['w-?&;#~='.'/]+'@('[?)[a-zA-Z0-9'-'.]+'.([a-zA-Z]{2,3}|[0-9]{1,3})(']?))/i","<A HREF='"mailto:$1'">$1</A>",$string);
return $string;
}
function redirect($url){
if (headers_sent()) {
die('<script type="text/javascript">window.location.href="' . $url . '";</script>');
}else {
header('Location: ' . $url);
die();
}
}
$f = !empty($dir) ? $dir: htmlspecialchars($_SERVER['REQUEST_URI']);
$fp = fopen($filename , 'r+') or die("can't open file ! ");
while ( !feof( $fp ) ) {
$line = fgets( $fp, 1024 );
if ($f === strstr($line, ' ', true)) {
$u = strstr($line, 'http');
//redirect($u);
//echo '<script type="text/javascript">window.location.href="' . $u . '";</script>';
header('Location: ' . $u);
exit;
}
}
if ($url != '' && !empty($dir)) {
fseek($fp, 0, SEEK_END); // Go to the end of the file
fwrite($fp,"/$dir http://$url 'n");
fclose($fp);
}
?>
</body>
</html>
感谢
此错误意味着在您尝试重定向之前，执行的页面或包含在页眉之前的某个页面至少回显了一些内容。在文件中向上移动标题，或者确保文件中包含的文件不回显任何内容。在您的情况下，您必须将其移动到文件的最顶部，因为您的文件以回显html文件的开头开始。
在html标记之前进行头部重定向，stackoverflow中的很多帖子都应该指出。
<?php
header ('Location:'. $U);
?>
<html>