How can I get around the lack of a finally block in PHP?

user_114400 0
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PHP prior to version 5.5 has no finally block - i.e., whereas in most sensible languages, you can do:

try {
   //do something
} catch(Exception ex) {
   //handle an error
} finally {
   //clean up after yourself
}

PHP has no notion of a finally block.

Anyone have experience of solutions to this rather irritating hole in the language?

resource-cleanup exception php
7 Answers

Solution, no. Irritating cumbersome workaround, yes:

$stored_exc = null;
try {
    // Do stuff
} catch (Exception $exc) {
    $stored_exc = $exc;
    // Handle an error
}
// "Finally" here, clean up after yourself
if ($stored_exc) {
    throw($stored_exc);
}

Yucky, but should work.

Please note: PHP 5.5 finally (ahem, sorry) added a finally block: https://wiki.php.net/rfc/finally (and it only took a few years... available in the 5.5 RC almost four years to the date since I posted this answer...)

moocha_144440

As this is a language construct, you won't find an easy solution for this. You can write a function and call it as the last line of your try block and last line before rethrowing the excepion in the try block.

Good books argues against using finally blocks for any other than freeing resource as you can not be sure it will execute if something nasty happens. Calling it an irritating hole is quite an overstatement. Believe me, a hell lot of exceptionally good code is written in languages without finally block. :)

The point of finally is to execute no matter if the try block was successfull or not.

user_861580
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