efficiency to "$i" or to .$i

[objnoob]

Is it more efficient to concat strings to variables or include variables within a double quote enclosed string?

 

I've created a couple of classes to help take tons of coding off of the front end, and I've been pondering the idea of creating a container class to hold specific objects of some classes. My container class methods will do a lot of iterating through a lot of varient object names, and I'm questioning efficiency in regards to resolving the object variable's names...

 

Which is more efficient?

${"type_$i"}->setAttribute('readonly', 'readonly');
${'type_'.$i}->setAttribute('readonly', 'readonly');

[premiso]

Concat will be more efficient. But the difference is so small will not be noticeable.

 

The reason being is that single quotes do not have to worry about parsing data so it is one less look up needed.

[ignace]

The reason being is that single quotes do not have to worry about parsing data so it is one less look up needed.

 

So the below is slower because you used double quotes  Basically, it doesn't matter use whatever you fancy! And even if you run into performance issues this will not be one of those area's you'll be putting focus on.

 

${"type_".$i}

[premiso]

So the below is slower because you used double quotes

${"type_".$i}

 

Correct. And as I said, the difference is so small that it will not be noticeable, but the bottom line is that double quotes are slower.

[Mchl]

THe bottommost line is, something is wrong with this code, that looks like could use arrays instead of variable variables.