Variables and References Article
A week ago PHP 4.4.0rc1 was released - this release addresses major problems with references in PHP. But not many people are fully aware of how variables and references actually work in PHP. This is where my latest article in PHP Architect comes into play. It explains in details how assigning variables, passing variables to functions and returning variables from functions work - both by-value and by-reference.
Comments
Thanx for the article, it gives a deep insight into PHP internals.
However, there's one issue left unspoken, that is PHP5 objects internal model. It's obvious they're not just variables...
How are they implemented actually?
Consider the following lines in PHP5:
$a = new Foo(); $b = $a;
Is it equivalent internally in PHP5 to this:
$a = new Foo(); $b =& $a;
If not what the difference? Is it actually "healthy" to use & with objects in PHP5? Is there speed overhead?
I'm asking all these questions because we're using PHP5 with applications which were written solely for PHP4 yet using OOP. These applications use & almost everywhere and i wonder how PHP5 treats it internally....
Life Line
Little Owl owlet
This lovely owlet was quite easy to find in a London Park, with some help as they camouflage so well!
I saw its sibling too.
#BirdPhotography #BirdsOfFediverse #Photography #Nature #London #BirdsOfMastodon
I went to a park (Bushy Park) to look for some owls.
I found Owls (Little and Tawny), but also a Green Woodpecker and two Kingfishers.
Snaps from my camera screen, and real photos will follow, but not of the Kingfishers as they were too far away and the photos are blurry.
#london #BirdPhotogaphy #BirdsOfMastodon #Birds #photography #BirdsOfFediverse #BushyPark
I hiked 13.8km in 4h44m12s
Created a chocolate shop and a restaurant; Updated 6 restaurants and an address; Confirmed 5 restaurants, a community_centre, and 3 other objects
Created a restaurant, a fast_food, and 2 other objects; Deleted a restaurant
I walked 8.5km in 1h31m45s
Created 2 buildings and a hairdresser shop; Updated a restaurant and an estate_agent office; Confirmed a cafe
I walked 2.2km in 38m09s
Merged pull request #1096
Bump actions/checkout from 6 to 7
Merged pull request #1095
Improve Tiverton Green mapping
Created 2 gates
I walked 7.1km in 1h23m15s
I walked 1.0km in 9m24s
Realign streets. They now have much less wide corners into each other.
Updated a fast_food
I walked 9.1km in 1h35m41s
I hiked 4.7km in 3h24m10s
I walked 6.7km in 1h12m03s
I walked 7.7km in 1h47m24s
Updated a pub
Updated a pub
Created a bar; Updated a bar; Confirmed a restaurant and a bar
Shortlink
This article has a short URL available: https://drck.me/vara-41v