CODEWITHSUNDEEP
phperror-handlingthrowable
neubert
neubert

Reputation: 16802

errors in PHP 7 not being thrown

It's my understanding, per http://php.net/manual/en/language.errors.php7.php, that errors in PHP7 are now supposed to be thrown. But in my own testing this does not seem to be the case:

<?php

error_reporting(E_ALL);

try {
    echo $a[4];
} catch (Throwable $e) {
    echo "caught\n";
}

echo "all done!\n";

In that case I'd expect "caught" to be echo'd out and then the script to say "all done!". Instead I get this:

Notice: Undefined variable: a in C:\games\test-ssh3.php on line 12
all done!

Am I misunderstanding something?

Upvotes: 0

Views: 420

Answers (1)

Ricardo Velhote
Ricardo Velhote

Reputation: 4680

Exceptions are only thrown for certain types of errors that previously would halt execution (E_RECOVERABLE_ERROR). Warnings and notices do not halt execution therefore no exception is thrown (found a source for this).

You have to define a custom error handler and throw the exception there. PHP Notices are not exceptions so they are not caught via a try/catch block.

set_error_handler('custom_error_handler');

function custom_error_handler($severity, $message, $filename, $lineno) {
    throw new ErrorException($message, 0, $severity, $filename, $lineno);
}

try {
    echo $a[4];
} catch (ErrorException $e) {
    echo $e->getMessage().PHP_EOL;
}

echo "all done!\n";

Upvotes: 1

Related Questions