Magento 2.4.4 with php 8.1 issue

Question

I have version 8.1.3 of PHP and I am getting the following error message on Magento 2.4.4:

    Exception #0 (Exception): Deprecated Functionality: strtotime(): Passing null to parameter #1 ($datetime) 
of type string is deprecated in /data/web/magento2/lib/internal/Magento/Framework/Stdlib/DateTime/Timezone.php on line 259

on the homepage, category pages etc. Have you faced this issue before ? Do you have any suggestions how to fix it ?

Thank you

Answer 1

I think you are missing both these things

• PHP fpm all extensions
• Composer version

You can also rename the vendor and update the composer.

Answer 2

Sorry i can't understand why this issue getting in core modules but i was facing same issue like PHP Deprecated: explode():. So i have found temporary solution for it.

Below is that us my issue solution.

$comp_uids = explode(',', $result['comp_uids'] ?? '');

And i am not sure about you issue but try below solution once time.

return strtotime($date) ?? '';

Check below links:

https://stackoverflow.com/questions/71707325/migration-to-php-8-1-how-to-fix-deprecated-passing-null-to-parameter-error-r

https://stackoverflow.com/questions/71097927/php-8-1-explode-passing-null-to-parameter-2-string-of-type-string-is-de

Thanks.

Answer 3

I hope this answer helps you

The main problem that causes this error is that somewhere there is a use of strtotime() function, but the param passed is null. I think you need to check the log to know exactly where the problem is, or start debugging from /data/web/magento2/lib/internal/Magento/Framework/Stdlib/DateTime/Timezone.php on line 259.

You can use debug backtrace to log and find it easier

$writer = new \Zend_Log_Writer_Stream(BP . '/var/log/custom.log');
$logger = new \Zend_Log();
$logger->addWriter($writer);
$debugBackTrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
foreach ($debugBackTrace as $item) {
    $logger->info(@$item['class'] . @$item['type'] . @$item['function']);
}

Then reload your page and check file custom.log in folder /data/web/magento2/var/log/