Related Content
Recreating Spotify Wrapped In PHP
I quite like the end of the year report from Spotify that they call "Wrapped". This is a little application in which they tell you what your favorite artist was and what sort of genres you listened to the most during the year.
Should A Constructor Throw An Exception?
Let's say you had a class that you wanted to use, but there was some sort of error in creating the object. This might be that the wrong parameters were passed, or the third party service (eg. a database) wasn't available at the time of creation.
PHP Question: Variable Reference
Question
What does the following code print out?
function arrayPrint($array)
{
echo implode(' ', $array);
}
$arrayA = [1, 2, 3];
$arrayB = $arrayA;
$arrayB[1] = 0;
arrayPrint($arrayA);
Creating An Authentication System With PHP and MariaDB
Using frameworks to handle the authentication of your PHP application is perfectly fine to do, and normally encouraged. They abstract away all of the complexity of managing users and sessions that need to work in order to allow your application to function.
Creating Sparklines In PHP
A sparkline is a very small line graph that is intended to convey some simple information, usually in terms of a numeric value over time. They tend to lack axes or other labels and are added to information readouts in order to expand on numbers in order to give them more context.
PHP:CSI - Improving Bad PHP Logging Code
I read The Daily WTF every now and then and one story about bad logging code in PHP stood out to me. The post looked at some PHP code that was created to log a string to a file, but would have progressively slowed down the application every time a log was generated.
Comments
The first loop will return 0 and the second one as 1. reason being, while, first checks the condition and fails and do while, first executes it and then checks the condition.
Submitted by Sirish on Tue, 05/17/2011 - 21:57
PermalinkI've got a question about the do while order, what will happen if you rotate it to while do? I am sorry if it sounds like a stupid question I admit I am a beginner and really would like to learn, thank you.
Submitted by Daniel on Tue, 04/13/2021 - 09:06
PermalinkHi Daniel,
It's fine to ask questions, especially if you're learning!
So I'm assuming you mean converting the structure to this:
This results in a syntax error as PHP doesn't know what to do with the "do" at the end of the statement. In PHP there is a while loop and a do-while loop, but not a while-do loop.
The question in this post is meant to show the differences between while and do-while, showing that the code in the do-while loop is run at least once, even if the outcome of the while check is false.
I hope that helps a little?
Submitted by philipnorton42 on Tue, 04/13/2021 - 11:05
PermalinkAdd new comment