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
Updated a restaurant
Created a bench
Updated a cafe
But I think my favourite photo was of this Carrion Crow in flight.
#Photography #BirdsOfFediverse #BirdPhotography #Nature
The new birds I saw, were mostly too far away to get good photos.
But I saw my first Spoonbill, Corn Bunting, and a flock of Black-tailed Godwits.
#BirdPhotography #BirdsOfFediverse
I had a lovely walk around RSPB Bowers Marsh yesterday, where I saw some expected birds, and a bunch of new species.
When I got there, there was this welcome committee of Starlings.
#BirdPhotography #nature #BirdsOfFediverse #Birds #Photography #RSPB
RSPB Bowers Marsh
Created 2 benches
I hiked 11.3km in 3h31m08s
Updated a pub
Updated a pub
Updated 4 pubs; Confirmed a pub
Created a restaurant
I walked 0.8km in 9m31s
I walked 2.1km in 16m42s
I walked 4.7km in 48m42s
I walked 7.4km in 1h16m10s
Updated a fast_food
Updated a cafe, a pet shop, and a bench; Confirmed a cafe, a convenience shop, and a motorcycle_repair shop
I walked 5.0km in 1h2m27s
I walked 1.1km in 10m08s
Updated a cafe; Confirmed 3 convenience shops, a fast_food, and a laundry shop
Created a fitness_centre; Updated an event_caterer office and a social_facility; Confirmed a restaurant and a pharmacy
I walked 7.6km in 1h29m58s
Updated a pub
Shortlink
This article has a short URL available: https://drck.me/vara-41v