Posts

dseguy, 4 hours ago to php French

En route for #neoscon24 (Karlsruhe) with the elephpant patriarch and an advanced session on types in #PHP. See you there!

dseguy, 2 days ago to php French

#PHP foreach() works on arrays and objects. On objects, it skips uninitialized properties, which may be very convenient with readonly properties : otherwise, it is a fatal error!

#phptip #phptrick

https://php-tips.readthedocs.io/en/latest/tips/foreach_skips_uninitialized.html

dseguy, 8 days ago to php French

#PHP question of the day : when you know that
2*2 = 4
2^2 = 4 (too)
2.5^2.5 = 9.8821176880262..

Where is this 6 coming from ?

#phptip #phptrick

dseguy, 9 days ago to php French

More about the Override attribute :

where else can #PHP use this attribute?
when will it raise a Fatal error?
It is not always at compile time (it never is).

https://www.exakat.io/en/more-about-the-override-attribute/

dseguy, 28 days ago to php French

#PHP allows to use 'class' as a class name in a type. Same for interface, enum... and some others.

Hey! I'm also not too proud of myself, but it made me chuckle.

https://php-tips.readthedocs.io/en/latest/tips/class_is_valid_class.html

#phptip #phptrick

dseguy, 29 days ago to php French

#PHP has a 'precision' directive that controls the number of decimals displayed by float values.

It default to 14, and peaks at 18, and gives up at 54. Use gmp for large numbers.

When changing it, don't forget to reset it to default, unless you like to puzzle people.

https://php-tips.readthedocs.io/en/latest/tips/precision.html

#phptip #phptrick

dseguy, 1 month ago to php French

#PHP doesn't allow float as index in arrays.

It is possible to use them as such by casting them to string. Later, type juggling will allow adding to another float, seamlessly.

#phptip #phptrick

https://php-tips.readthedocs.io/en/latest/tips/store_float_as_index.html

dseguy, 1 month ago to php French

Thursday, April 11th is @010php day, hosted by @bitfactory.

This month's session is about #PHP advanced type usage. See the impact of types on the structure of your code, identify impossible methods and design the others!

Go! https://www.meetup.com/010php/events/299863925/

dseguy, 1 month ago to php French

#PHP has (int) and (integer) cast operators, but only the int type.

'integer' type is presumed to be a class. It raises a warning, even if it exists.

"integer" will be interpreted as a class name. Did you mean "int"? Write "\integer" to suppress this warning

#phptip #phptrick

dseguy, 2 months ago to php French

I finally found an occurrence of this beauty :

$this->$this

It still looks like a typo in the original code, but with the help of #PHP __toString, it works. Also, strict_types doesn't help here.

https://php-tips.readthedocs.io/en/latest/tips/this_this.html and more tips!

#phptip #phptrick

dseguy, 2 months ago to php French

A #PHP variadic argument collects all the unused named parameters, along with their key. That way, it is possible to handle them with their name inside the method.

On the other hand, array_merge (and some cousins) refuse them, and emits a Fatal error.

#phptip #phptrick

dseguy, 2 months ago to php French

1. it is possible to call a method 'as', because relaxed keywords #PHP methods

2. it is possible to import a method from a trait, and alias it to itself.

It is possible to write 'as as as ' in #PHP and make sense.

#phptip #phptrick

https://php-tips.readthedocs.io/en/latest/tips/as-as-as.html

dseguy, 2 months ago to php French

What is a #PHP
function which has a return type, yet doesn't return anything?

#phptip
#phptrick

dseguy, 3 months ago to php French

A story of #PHP compact() and extract()

Compact() and extract() are two sides of the same coin. They are also a good part of the PHP story, along with the variable variables. Let’s see how they can make it into the future of PHP.

https://www.exakat.io/en/a-story-of-compact-and-extract-2/

dseguy, 3 months ago to php French

The #PHP code below produces a float, although it seems to produce an integer.

This is due to (int) having higher precedence than multiplication: it is applied to $c, without effect.

https://php-tips.readthedocs.io/en/latest/tips/cast_precedence.html

#phptip #phptrick