Monolog version 2.4.0 incompatible with PHP versions <8

[michdingpayc]

The file src/Monolog/Attribute/AsMonologProcessor.php in monolog version 2.4.0 uses constructor property promotion (lines 31-33) which was introduced in PHP version 8.0.

When used in PHP 7.4, one sees the following:
PHP Parse error: syntax error, unexpected 'public' (T_PUBLIC), expecting variable (T_VARIABLE) in [...]/vendor/monolog/monolog/src/Monolog/Attribute/AsMonologProcessor.php on line 31.

The issue here is the fact that the composer.json file and therefore the monolog/monlog packagist page lists the PHP version requirement as ">=7.2".

[Seldaek]

Attributes are a php8 feature so you cannot use this class on 7.4 anyway and I'm not sure what you are doing?

[wp-seopress]

Same issue here, VS Code returns an error.

Solution?

public function __construct(?string $channel = null, ?string $handler = null, ?string $method = null) {

[michdingpayc]

Attributes are a php8 feature so you cannot use this class on 7.4 anyway and I'm not sure what you are doing?

Thank you for the quick response.

The attribute class isn't used in the PHP 7.4 project I'm referencing, but the monolog vendor directory is preloaded into opcache. This is done for performance purposes but with monolog version 2.4.0 that is also where this issue arises.

The file can be explicitly excluded from preloading, but I would like to hear your thoughts first.

[Seldaek]

Fixed in 508df12 - please upgrade to 2.5.0

[michdingpayc]

Thank you kindly!