Bifalgorithm post · Computer science one · Type Juggling

How does PHP handle different variable types in arithmetic expressions?

How does PHP handle different variable types in arithmetic expressions? (Computer science one · Type Juggling) — "The expectations of an arithmetic expression…

Ideas in this flowchart

Comportement des expressions arithmétiques PHP selon les types des variables
Avec des entiers ou des nombres flottants, le résultat attendu est la somme, le produit, etc.
Le typage dynamique de PHP permet à une expression arithmétique de recevoir des valeurs de types variés.
Une valeur booléenne true est traitée comme 1 et false comme 0.
Un tableau utilisé dans une expression arithmétique provoque généralement une erreur fatale.
Un objet non nul est traité comme 1, tandis que null est traité comme 0.
PHP autorise toutefois l’addition de deux tableaux, ce qui produit leur union.

Bifalgorithm

Feed/

How does PHP handle different variable types in arithmetic expressions?

No cover

Channel

Computer science one

1 page

sam23

Ebook2w

"The expectations of an arithmetic expression involving two variables that are either integers or floating point numbers are straightforward. We expect the sum/product/etc. as a result. However, since PHP is dynamically typed, a variable involved in an arithmetic expression could be anything, including a Boolean, object, array, or string. When a Boolean is involved in an arithmetic expression, true is treated as 1 and false is treated as zero. If an array is involved in an expression, it is usually a fatal error. Non-null objects are treated as 1 and null is treated as 0. PHP does allow you to “add” two arrays together which results in their union."

Flowchart preview

👍

0 comments0 shares