#18590 [Com]: Fatal error: Cannot redeclare upon reload

ID: 18590 Comment by: greg at pwsdb dot com Reported By: armageddon at raydan dot de Status: No Feedback Bug Type: Scripting Engine problem Operating System: WinXP Pro PHP Version: 5.0.0-dev New Comment: PPS no, it is not working in the login page now, either. Same experience as the others above?: "First it works, then it doesn't." Previous Comments: ------------------------------------------------------------------------ [2009-02-04 03:46:35] greg at pwsdb dot com PS This only happened within a checkout page of ZenCart ("part 3 of 3") and not another (not the login page) ... I don't know enough about zc to know what the significant difference is. ------------------------------------------------------------------------ [2009-02-04 02:59:23] greg at pwsdb dot com this experience/test may help: I defined a function (fff) in the top of my pgm. (not in a loop) it spanned from line 5 to 11 and used it in the code below. I got this error msg: Fatal error: Cannot redeclare fff() (previously declared in /.../xxx.php:5) in /.../xxx.php on line 11 I then removed it to an external file (xx-functions.php) and did a "require_once() for xxx-functions.php on line 6 and got these 2 error messages where there should have only been one. IT WAS TRYING TO LOAD THE FUNCTION(PGM) TWICE: Warning: require_once(xxx-functions.php) [function.require-once]: failed to open stream: No such file or directory in /.../xxx.php on line 6 Fatal error: require_once() [function.require]: Failed opening required 'xxx-functions.php' (include_path='.:/usr/share/pear') in /.../xxx.php on line 6 ------------------------------------------------------------------------ [2008-05-30 13:48:47] mark dot php dot net dot special at emceesoftware dot com As a followup to my last comment, the way this "error" is being reported proved a little confusing, and my warrant some minor research in order to help make it a bit easier to identify when it happens. My error log reports the following (abbreviated): PHP Fatal error: Cannot redeclare simplehtml_rendercontent() (previously declared in SimpleHTML.php:149) in SimpleHTML.php on line 152 Noteworthy is the fact that the RenderContent() method is declared on line 149. The closing brace for the method is on line 152. It was this difference in line numbers that proved the most confusing. If they both reported out at line 149, I suspect I would have more quickly determined that I was seeing a reload problem of some sort. Also, if after adjusting the line number being reported, it is determined that they are identical, it might be helpful to post an additional line in the error log which suggests the developer look at replacing an include() with include_once() or require() with require_once(). With that bit of reporting, I suspect most folks who get bit with this type of issue will be able to resolve it more quickly (whether dynamically as I've done, or at the top of a PHP file). ------------------------------------------------------------------------ [2008-05-30 12:43:13] mark dot php dot net dot special at emceesoftware dot com PHP 5.2.4 (Build date 30 Aug 2007) I experience this error while using a technique for dispatching method calls dynamically. On receipt of an XML packet, an API method determines the php module (source file) that needs to be loaded to process the XML file. Next, the method name is loaded into a variable, and the source file is included. Finally, the variable is used to call the method. I've been successfully testing this approach for some time, and am confused as to why it has started "now". Code sample (abbreviated): $moduleName = ... (extracted from XML structure) $methodName = ... (derived from another parameter) $sourceFile = $_SERVER["DOCUMENT_ROOT"].'/path/'.$moduleName.'.php'; include( $sourceFile ); $dynamicMethod = $moduleName.'_'.$methodName; $dynamicMethod(); // attempt the call My theory is that this code is being called multiple times with the same value for $moduleName, causing the include() method to attempt to load it multiple times. While this doesn't seem to be an issue when using the static 'include_once' declaration, it appears to be an issue when loading dynamically. When changing the above code to use include_once(), the problem seems (so far) to have gone away. ------------------------------------------------------------------------ [2007-09-03 13:52:58] info at rchu dot nl update: adding a space to the source results in the same 'cannot redeclare' error. Only changing the function name resolves the problem at the fist run. Must be some kind of caching problem I suppose. When running the script on the command line there is no problem, just when I request in in my browser. I run the pre-installed apache1.3 on Mac OS X 10.4.10 and used the --with-apache-hooks option on compiling because I do not have the apache.h source file (since I haven't compiled apache). ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/18590 -- Edit this bug report at http://bugs.php.net/?id=18590&edit=1