php – Page 19 – Türker Yıldırım

Readonly classes and the DTO that stopped needing a constructor

Deep diveDecember 20, 202210 min read

8.2 on 8 December, and readonly applied to a whole class. readonly on every property, written out forty times.

Dynamic properties are deprecated, and that is the feature

NoteDecember 20, 20222 min read

Assigning to an undeclared property has silently created one since PHP 4, which means every typo in a property name has been a working assignment to the wrong…

utf8_encode is deprecated and was never what you wanted

NoteDecember 20, 20222 min read

utf8_encode converts from ISO-8859-1 specifically, which is almost never the encoding the input was actually in. The double-encoding it produces is the single most common source of mojibake…

The dynamic property that had been a typo since 2016

Deep diveDecember 13, 202214 min read

8.2 on 8 December deprecates dynamic properties, and the deprecation is the feature. $order->totl has been silently creating a property for six years.

Autowiring by argument name is a footgun with a nice name

NoteDecember 13, 20222 min read

When two services share an interface, Symfony resolves the ambiguity using the parameter name, which makes a rename a behaviour change. A parameter name becoming part of the…

__destruct runs at an unpredictable moment, and may not run

NoteDecember 10, 20222 min read

A destructor runs when the last reference is dropped, which is not the same as when the variable goes out of scope, and not at all on a…

A readonly class is readonly on every property

NoteDecember 8, 20222 min read

Writing readonly on every property of a value object was the only way to say something the class as a whole was trying to say. The class modifier…

A readonly class may only be extended by a readonly class

NoteDecember 8, 20222 min read

Inheritance is constrained in one direction only, which means a readonly base cannot be subverted and a mutable base can still be tightened. The symmetry is the surprise:…

The webhook we sent, and the retries we owed

Deep diveDecember 7, 202210 min read

Being the sender, for the first time, and the obligations that come with it. A customer endpoint that was down for six hours.

null, false and true as standalone types

NoteDecember 7, 20222 min read

false had been usable only as part of a union since 8.0, and null and true could not be written at all. Narrowing a return type in a…