Re: function returning true or errors
| From: | Jason Wong | Date: | Thu, 18 Apr 2002 15:56:03 +0000 |
| Subject: | Re: function returning true or errors | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-93556@lists.php.net to get a copy of this message | ||
On Thursday 18 April 2002 23:25, Erik Price wrote:
> I am writing a function that performs some actions. I would like to
> return true if the actions succeed, or return an error message if the
> actions fail. How should I go about it? The following code doesn't do
> it, because the returned error message is interpreted as a boolean
> "true" (I think that's what's happening):
>
> if (custom_function() == true) {
> print "Custom Function succeeded!";
> } else {
> print custom_function();
> }
>
> I would actually rather just have the error message generated by the
> script that calls the function, but the function performs some logic
> that determines what kind of error message to give. I was thinking of
> having the function return "1" if succeeds, "2" if error code A, or
> "3"
> if error code B, and then a switch statement could decide what to do in
> the calling script -- but does this sound sloppy?
What I tend to do is define functions like so:
function doo($dah, $dib, &$error) {
...
...
if success {
return TRUE; }
else {
$error = "You've committed a grave sin!";
return FALSE;
}
}
Then call as:
if (doo(...)) {
echo "OK"; }
else {
echo "Error: $error";
}
--
Jason Wong -> Gremlins Associates -> www.gremlins.com.hk
Open Source Software Systems Integrators
* Web Design & Hosting * Internet & Intranet Applications Development *
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