try

dman2004

Is there such a thing in php, that would be the equivalent of CFTRY in cold fusion.

Basically,

try a block of code and if theres errors just forget it and keep going.

Thanks

dalecosp

... maybe we won't LHTD this one? (One word subject lines generally are pretty worthless...)

You mean, besides "if"? That'd be the easiest...


if ($success=mail($to, $subj, $message)) {
   do_something();         // or it could be do_nothing();
}

//You can also suppress error messages

$success=@mail($to, $subj, $message);

Then, there's a rather extensive set of error and logging functions, , and you can use [man]set_error_handler[/man] to set your own handler functions.

I am sorry that I'm ignorant of CF, so I can't give you an exact answer. I think this one is saying "I don't think so, here is what we DO have..."

Maybe someone else can do better for you ...

dman2004

Thanks Dale but no.

I looked around and I don't think it exists. If there's an error in your if statements you'll get an error on the screen. What I am looking for is to completely ignore the the code.

What I am looking at is writing to a text file, and I'm worried because of the amount of users on the site. So if 1000 people try to write at the same time to the same file and an error occurs well forget writing to the file.

Thanks anyways

AstroTeg

[man]set_error_handler [/man] might be for you. But no, try/catch is not available in PHP v4 (I think in v5 its available).

I have mixed feelings about try/catch. If you have to rely on try/catch to make your code work, then you're writing sloppy code. In your case, you need to develop a file locking system (or use the OS's locking) to lock the file if its being modified. Then you need to have code in your script identify if the file has been locked and then you could do something about it (maybe sleep for a second or two and try again and then give a nice clean error to your user saying the system is busy).

dalecosp

Originally posted by AstroTeg
[man]set_error_handler [/man] might be for you.

Apparently not, as I suggested that also.

But no, try/catch is not available in PHP v4 (I think in v5 its available).

They are being added to v5; there is a builtin class entitled "Exception" which has 2 member functions, getFile and getLine, that return values kinda as you'd expect, or you can do something like this:

try {
    something;
    throw Exception
    something_else;
}
catch(class $var) {
    yet_another_something;
}

I have mixed feelings about try/catch. If you have to rely on try/catch to make your code work, then you're writing sloppy code.

This seems logical to me as well; however, I've not written every program in the world yet 😉

It might be interesting or helpful to know just what kind of errors dman is expecting...

Originally posted by dman2004
I looked around and I don't think it exists. If there's an error in your if statements you'll get an error on the screen. What I am looking for is to completely ignore the the code.

This isn't entirely true, because it depends on the severity of the error, and what you have done to prepare for that possibility. Small errors can be ignored using the "@" operator. If there is a more severe error, what is fed to the browser is highly dependent on php's configuration for error reporting. In a properly set-up production environment, at worst you get a blank page when a fatal error was encountered...the errors should go the httpd-error.log ...

dman2004

Hi Thanks.

Dale I agree you can't rely on try and catch but you never know, especially when writing to a text file.

How would you check to see if the file is locked, then how would you make it wait? somekind of while loop?

Thanks

dalecosp

Originally posted by dman2004
Hi Thanks.

Dale I agree you can't rely on try and catch but you never know, especially when writing to a text file.

How would you check to see if the file is locked, then how would you make it wait? somekind of while loop?

Thanks

I'm going to guess it's [man]flock/man and [man]sleep/man that you'd be after ... but I've never used them.