1.2.328. DateTimeImmutable Is Not Immutable¶
DateTimeImmutable is not really immutable because its internal state can be modified after instantiation.
Inspired by the article from Matthias Noback.
<?php
$dt = new DateTimeImmutable('now');
echo $dt->getTimestamp() . "\n";
$dt->__construct('tomorrow');
echo $dt->getTimestamp() . "\n";
?>
See also Effective immutability with PHPStan.
1.2.328.1. Suggestions¶
Remove the call to the constructor after instantation of a DateTimeImmutable object
1.2.328.2. Specs¶
Short name |
Php/DateTimeNotImmutable |
Rulesets |
|
Exakat since |
2.4.5 |
PHP Version |
All |
Severity |
Minor |
Time To Fix |
Quick (30 mins) |
Precision |
High |
Available in |