标题（“位置：...”）;问题 [英] header("Location: ..."); Problem
问题描述
我在尝试运行脚本时收到以下消息：
"警告：无法修改标题信息 - 已经发送的标题（输出
开始于/var/www/html/newcustomer.php:23）
/var/www/html/newcustomer.php第332行"
.... newcustomer.php：23是我的剧本开始的地方，在第23行。
在该行之前，只有评论。
该脚本从表单中恢复数据，检查客户是否存在，如果存在，
它会更新数据，否则会将新客户插入数据库。还有一些
验证在写入数据库之前完成。
提前，感谢您的时间和建议。
FM>
这里是我的剧本流程：
<？php
包含''db.inc''
包含''error.inc。
//初始错误字符串
$ errorString ="" ;;
// clean&修剪张贴值
... ......
//验证数据
if（空（$ formvars [" source"]））
$ errorString。=
" \ n< br>您必须提供源名称。 ;;
//验证其他数据
...... ......
//验证结束
//检查是否存在错误
if（！empty（$ errorString））
{
//确实存在错误，显示它们&退出
？>
< html>
< body>
< br>错误是找到。
< br>
<？= $ errorString？>
< / body>
< / html>
<？php
退出;
}
//如果所有数据都有效，打开连接并加载到db
if（！（connection = @ .....））
die（ ...）;
if（！mysql_select_db（...，...））
showerror（）;
//数据是否正在更新？然后更新数据库
if（！empty（$ cust_id））
{
$ query =" UPDATE customer SET" 。
" source = \"" 。 $ formvars [" source"]。 " \"，" 。
...... ......
...... ......
WHERE cust_id = $ cust_id" ;;
}
else
//创建查询以插入数据
$ query = INSERT INTO客户
...... ......;
//在客户表上运行查询
...... ......
//这是插入吗？
if（empty（$ cust_id））< br $>
//找到新客户的cust_id
$ cust_id = mysql_insert_id（）;
//现在将客户重定向到收据页
header（" Location：cust_receipt.php？cust_id = $ cust_id"）;
？>
errorString ="" ;;
// clean&修剪张贴值
... ......
//验证数据
if（空（
formvars [" source"]））
errorString。=
" \ n< br>你必须提供来源的名称。;
//验证其他数据
... ......
//验证结束
//检查是否存在错误
if （！空（
I get the following message when trying to run my script:
"Warning: Cannot modify header information - headers already sent by (output
started at /var/www/html/newcustomer.php:23) in
/var/www/html/newcustomer.php on line 332"
....newcustomer.php:23 is where my script begins, at line 23.
before that line, only comments.
The script recives data from a form, checks if the customer exists, if so,
it updates the data otherwise inserts a new customer into the db. Also some
validation is done before writing to the db.
In advance, thanks for your time and advice.
FM>
And here''s the flow of my script:
<?php
include ''db.inc''
include ''error.inc.
//init error string
$errorString = "";
//clean & trim POSTed values
... ... ...
//validate data
if (empty($formvars["source"]))
$errorString .=
"\n<br>You must suply the name of the source.";
//validate other data
... ... ...
//end of validation
//check if errors exist
if (!empty($errorString))
{
//errors do exist, show them & exit
?>
<html>
<body>
<br>Errors were found.
<br>
<?=$errorString?>
</body>
</html>
<?php
exit;
}
//if all data valid, open connection and load into the db
if (!(connection = @ .....))
die( ... );
if (!mysql_select_db( ... , ... ))
showerror();
//Are the data being updated? Then update the database
if (!empty($cust_id))
{
$query = "UPDATE customer SET " .
"source = \"" . $formvars["source"] . "\", " .
... ... ...
... ... ...
WHERE cust_id =$cust_id";
}
else
//Create query to insert the data
$query = INSERT INTO customer
... ... ...";
//Run the query on the customer table
... ... ...
//Is this an insert?
if (empty($cust_id))
//find the cust_id of the new customer
$cust_id = mysql_insert_id();
//Now redirect the customer to the receipt page
header ("Location: cust_receipt.php?cust_id=$cust_id");
?>
errorString = "";
//clean & trim POSTed values
... ... ...
//validate data
if (empty(
formvars["source"]))
errorString .=
"\n<br>You must suply the name of the source.";
//validate other data
... ... ...
//end of validation
//check if errors exist
if (!empty(
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