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mySQL Result Source Errors
mySql 资源错误
Warning: Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in…
You need to take a look at the $result variable used to define the loop. More than likely there is a syntax error on the reported line before the $result field, or the value of $result does not exist.

Supplied argument is not a valid stream resource…
This is usually caused when your code is looking for a table or other resource in the database that does not exist.

Sessions are not being created or maintained
Sessions 不能被创建或者被修改维护
This can apply to any of the scenarios below:
(1) The program isn’t remembering your login 程序没有记录下你的登录状态
(2) Your shopping cart won’t hold items 你的购物车没有保持你的商品状态
(3) Your php script is redirecting like crazy 你的PHP代码跳转的太疯狂
(4) “Call undefined function session_start” error 你的服务器没有打开Session功能
(5) PHP isn’t processing pages called by something like index.php?page=home&id=7 你的PHP代码不能打开某个页面,比如index.php?page=home&id=7

Your site is most likely dependent on register_globals. You can enable them by putting this line in your .htaccess (or just enabling in your php.ini if you have access):
php_flag register_globals On

Stream Errors
Warning: failed to open stream…
Warning: main(/index.php): failed to open stream: No such file or directory in…

This is usually because either the specified file is missing, or a file declared in a require() or include() function is missing. The easiest way to fix this is by re-installing the PHP program from a freshly-uploaded copy, or restoring the original config.php and just changing the db information. The include path may also be incorrect, but either way your script is looking for a file that isn’t there, or it is looking in the wrong place.

Warning: fopen(…): failed to open stream: Permission denied in…
This is a permissions and/or ownership issue. Try first setting the permissions to 777 just to see if the script will run. If so, you should narrow down the permissions to 775. If not, set the user/group to user:nobody.

Warning: <…> is not a valid stream resource…
Warning: fread(): supplied argument is not a valid stream resource in…
This is an error seen when trying to use functions like fopen(), fread(), feof(), etc. and are usually caused by an invalid or unavailable resource that is being called in the line specified. For instance, if the fread() function is returning this error, it could be that the file it is trying to access does not have the correct permissions or does not exist.
这也是一个常见错误,当你使用fopen(), fread(), feof()等函数时,就可能会出现,错误原因一般是fopen()或者其他函数打开文件失败,但错误信息被屏蔽,如$fp=@fopen('file.txt');,在这种情况下,再使用fread()读取时,就会出现上面的出错信息。

Warning: Failed opening….
Warning: Failed opening ‘…’ for inclusion (include_path=’.:/usr/local/lib/php’) in Unknown on line 0
Make the sure that the file mentioned (and its holding directorie) has read + execute permissions, and that the path to the file is correct. If not, you’ll need to add the path into the PHP code: (or .htaccess)

Blank PHP Pages

You go to a .php page, but it’s blank.
The scope of what can cause blank pages is very broad, but there are a few things to look at:
-Is error reporting turned off anywhere in the script or in the .htaccess? If so, turn it on to see what is happening (php_flag display_errors on), or add the lines at the top of this page into the script.
-Is the PHP script even generating any output (usually you can tell my finding the print function?
-Check the database connection, i.e, username, dbname, user added to db, etc.
-Try using the full <?PHP ?> tags, rather than the shorter versions <? ?>

Also, if the software is prebundled (like phpBB or Gallery), then the index or one of the include pages could be corrupted. Usually you can just replace the problem page with a working version from another installation.

Max Execution Time Error
You receive some variant of a “Max_execution_time” error when loading a page.
This is caused when a PHP script takes longer to execute than the server allows, but can be adjusted by adding a PHP directive to your .htaccess: (in seconds, 0 = unlimited) or modifying the value in php.ini.
php_value max_execution_time 0
打开页面时,显示 "Max_execution_time" 执行时间错误。
php_value max_execution_time 0

Open_basedir Errors

Warning: Unknown(): open_basedir restriction in effect.
This is a protective feature of Apache that restricts PHP from accessing files/folders outside the user’s home directory. Most of the time this is due to an incorrect include path in one or more of the config files (which are usually mentioned). Look for something like this:
The heading / tells the filesystem that these folders are on the server root, and thus prevents PHP from accessing them. You can usually fix this by changing the path to these files to be absolute to their location:

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Post by QQ空间代码 on 2008, April 2, 9:18 PM 引用此文发表评论 #1


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