Re: [PHP] Is there a way to un include a file
No. You could perhaps wipe out *EVERYTHING* in $_GLOBALS, which would be the included file and anything in the main file[s] that went before. If you need an environment that is that "pure" for testing or something, you can run a different PHP process on each file. Otherwise, you simply have to architect your application correctly. Some other solutions to this naming/scope problem include 'packages' which php doesn't have and 'namespaces' which php doesn't have and... There have been innumerable flame wars here and on Internals about the right way to add a new feature to do this, and I don't think there is any real concensus yet. On Thu, March 8, 2007 1:18 am, jekillen wrote: > Hello; > Is there a way to un include a file once it has been included in a > script. > My concern is where two php files might be included in another php > file they might have code or variables that conflict. I am thinking > of including files with different names but follow the same pattern > of code and variables but may have different values for variables > or different versions of the same function. > If there is not a specific function for un including a file (I have > not > seen any indication from my text books that there is), it seems like > it would be nice to have one. > Meanwhile I will be doing some experimentation. > Thanks in advance; > Jeff K > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- Some people have a "gift" link here. Know what I want? I want you to buy a CD from some starving artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Is there a way to un include a file
jekillen wrote: On Mar 7, 2007, at 11:47 PM, Larry Garfield wrote: No there is not, because an included file *executes* at the time it is included and is then done. Any memory-resident objects (function/class definitions, variables, etc.) that it defies then exist until you make them un-exist (with unset() for variables or, well, you can't with functions and classes AFAIK). Include files are libraries. They are not functions. What you're looking for is a function. Don't try to use include files as functions. Therein lies pain. I have function definitions in included files all over the place. I do that so one file will not be too big to keep scrolling back and forth through to develop and debug. These are mainly in conjunction with multi phase self processing forms. Variables I could guess would be overwritten, but if I have a function fu defined in two different files that are include in, say, a loop and I want to call one function fu on one iteration from one included file, then the next iteration I include the next file and call fu that is a different version, which function would be executed on the second iteration? You can't have two functions with the same name for exactly this reason. $ php -a Interactive mode enabled Fatal error: Cannot redeclare a() (previously declared in -:2) in - on line 3 So when script '2' is included (ie the 2nd loop), it's going to throw this sort of error. Time to rethink your design. -- Postgresql & php tutorials http://www.designmagick.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Is there a way to un include a file
On Mar 7, 2007, at 11:47 PM, Larry Garfield wrote: No there is not, because an included file *executes* at the time it is included and is then done. Any memory-resident objects (function/class definitions, variables, etc.) that it defies then exist until you make them un-exist (with unset() for variables or, well, you can't with functions and classes AFAIK). Include files are libraries. They are not functions. What you're looking for is a function. Don't try to use include files as functions. Therein lies pain. I have function definitions in included files all over the place. I do that so one file will not be too big to keep scrolling back and forth through to develop and debug. These are mainly in conjunction with multi phase self processing forms. Variables I could guess would be overwritten, but if I have a function fu defined in two different files that are include in, say, a loop and I want to call one function fu on one iteration from one included file, then the next iteration I include the next file and call fu that is a different version, which function would be executed on the second iteration? Thanks for the response, I think I will have to do some experimentation with this one. Jeff K -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Is there a way to un include a file
No there is not, because an included file *executes* at the time it is included and is then done. Any memory-resident objects (function/class definitions, variables, etc.) that it defies then exist until you make them un-exist (with unset() for variables or, well, you can't with functions and classes AFAIK). Include files are libraries. They are not functions. What you're looking for is a function. Don't try to use include files as functions. Therein lies pain. On Thursday 08 March 2007 12:18 am, jekillen wrote: > Hello; > Is there a way to un include a file once it has been included in a > script. > My concern is where two php files might be included in another php > file they might have code or variables that conflict. I am thinking > of including files with different names but follow the same pattern > of code and variables but may have different values for variables > or different versions of the same function. > If there is not a specific function for un including a file (I have not > seen any indication from my text books that there is), it seems like > it would be nice to have one. > Meanwhile I will be doing some experimentation. > Thanks in advance; > Jeff K -- Larry Garfield AIM: LOLG42 [EMAIL PROTECTED] ICQ: 6817012 "If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of every one, and the receiver cannot dispossess himself of it." -- Thomas Jefferson -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Is there a way to un include a file
AFAIK there's no function to un include a file, but i don't see a problem here, as when you include your second file, everything (all conflicting variables) will be overwritten. If you still have problems, you might want to use classes around your functions and variables. Tijnema On 3/8/07, jekillen <[EMAIL PROTECTED]> wrote: Hello; Is there a way to un include a file once it has been included in a script. My concern is where two php files might be included in another php file they might have code or variables that conflict. I am thinking of including files with different names but follow the same pattern of code and variables but may have different values for variables or different versions of the same function. If there is not a specific function for un including a file (I have not seen any indication from my text books that there is), it seems like it would be nice to have one. Meanwhile I will be doing some experimentation. Thanks in advance; Jeff K -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Is there a way to un include a file
On Thursday 08 March 2007 07:18, jekillen wrote: > Hello; > Is there a way to un include a file once it has been included in a > script. You seems to want the wrong thing... I could be mistaken, but from my point of view you would NOT include the file if not apropriate at that moment. > My concern is where two php files might be included in another php > file they might have code or variables that conflict. I am thinking > of including files with different names but follow the same pattern > of code and variables but may have different values for variables > or different versions of the same function. > If there is not a specific function for un including a file (I have not > seen any indication from my text books that there is), it seems like > it would be nice to have one. > Meanwhile I will be doing some experimentation. > Thanks in advance; > Jeff K -- --- Børge Kennel Arivene http://www.arivene.net --- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Is there a way to un include a file
Hello; Is there a way to un include a file once it has been included in a script. My concern is where two php files might be included in another php file they might have code or variables that conflict. I am thinking of including files with different names but follow the same pattern of code and variables but may have different values for variables or different versions of the same function. If there is not a specific function for un including a file (I have not seen any indication from my text books that there is), it seems like it would be nice to have one. Meanwhile I will be doing some experimentation. Thanks in advance; Jeff K -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
