Solved

Should you use {} for a variable in heredoc

Posted on 2016-11-06
3
57 Views
Last Modified: 2016-11-07
I have just felt the need to use heredoc to display multiple products from the database as it seems easier than trying to fiddle around with "" and ''. But like everything else, I am new to it and just wanted to know if I should use curly braces or not? I tried both ways and it didn't make a difference to what I saw outputted but I saw an example where someone said you should. I just wanted to know why. e.g.:

-$discount%

Open in new window


vs

-{$discount}%

Open in new window

0
Comment
Question by:Black Sulfur
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 110

Accepted Solution

by:
Ray Paseur earned 350 total points
ID: 41876095
You need those curly braces when you have quoted array indexes.  If you use object notation, you don't need the curly braces.  Try a couple of things like this and see what you think.  I prefer the object notation, and there are a whole host of other reasons, too advanced to go into now, to use objects instead of arrays whenever possible.
$doc = <<<EOD
Here is the price: $row['price']
EOD;

Open in new window

$doc = <<<EOD
Here is the price: {$row['price']}
EOD;

Open in new window

$doc = <<<EOD
Here is the price: $row->price
EOD;

Open in new window

0
 
LVL 31

Assisted Solution

by:Marco Gasi
Marco Gasi earned 150 total points
ID: 41876097
No. Curly braces are only required if you use a variable with array notation. For instance
echo <<<HDC
bla bla bla -$discount% bla bla bla {$user['last_name']} bla bla bla

Open in new window

works perfectly :)
0
 
LVL 57

Expert Comment

by:Julian Hansen
ID: 41876713
As a side note  I prefer to use {} around all variables - it is a bit of extra typing but it does two things

In my editor I get context colouring on the variable - makes strings easier to read with respect to where variables are.

I think it looks neater in terms of making the variables stand out.

Just my personal preference though.
1

Featured Post

Salesforce Has Never Been Easier

Improve and reinforce salesforce training & adoption using WalkMe's digital adoption platform. Start saving on costly employee training by creating fast intuitive Walk-Thrus for Salesforce. Claim your Free Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Part of the Global Positioning System A geocode (https://developers.google.com/maps/documentation/geocoding/) is the major subset of a GPS coordinate (http://en.wikipedia.org/wiki/Global_Positioning_System), the other parts being the altitude and t…
This article discusses how to create an extensible mechanism for linked drop downs.
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question