Is there an alternative to using for in php?

Asked

Viewed 116 times

-1

Is there any way to do in php what the for does it differently? An alternative method for example, but with the same result that would be achieved by using the for.

Example of the use of for:

for($contador = 0; $contador < 10; $contador++)
{
    echo "O contador agora é: $contador";
}

If it exists, how and what would be these ways?

php for

  • It will depend on what exactly you want to do.

  • 3

    What are the ways to iterate an array in PHP

  • I didn’t understand the question, could you please explain otherwise?

  • Otherwise, without using the for to obtain the same result, with alternative means @Guilhermenascimento

  • @Florida experimented foreach+range()?

  • @Guilhermenascimento didn’t, I really don’t know any other way to do it, so I wanted to know how, if it’s possible and how it would be done. The question may not be the best, but all knowledge is welcome.

  • 2

    @Florida I did not deny, I even answered to see if it helped something :) - I’ll leave +1 to see if it helps something. I’m thinking of a better way to describe your question to those who know we can reverse these downvotes.

  • Unfortunately I took a rain of negatives, I expected at least no positive for being something simple, unfortunately I will have to remove. Nothing against who gave -1, but they could at least say the reason, so better questions can be asked. Plus, I really liked the answers, I really learned another way if you do this, which is great. Learning is cool.

  • 1

    @Florida, I tried to research something similar here at Sopt and I did not find. In my view the question is clear, although too simple. Perhaps it will help in the future. Intriguing is that there is only one sign, which does not help much to understand the negatives.

  • 3

    I didn’t give -1, yet I find the question too vague, and that’s probably why. "Is there another way to do this?" but the example is too abstract and the actual intent of the code is unclear, and gives the intender that it will be much more than it is written. Showing what you’re really trying to do would be better and would probably have attracted more positives.

Show 5 more comments

2 answers

6


I didn’t quite understand the question, but if the idea is to have 1 to 10, or 1 to 100, or 50 to 200, always based on numbers and incrementing then you can simply use the range() of PHP itself, example:

$foo = range(1, 10);

print_r($foo);

Then you can use it with foreach or even implode, examples:

foreach

foreach (range(1, 10) as $contador) {
     echo "O contador agora é: {$contador}.";
}

implode

$foo = range(1, 10);

$baz = 'O contador agora é: ';

echo $baz . implode('. ' . $baz, $foo) . '.';

Over the range

The function range() PHP does not only generate numeric array, for example if you do something like:

range('a', 'e');

This will generate an array like this:

array('a', 'b', 'c', 'd', 'e');

And you can do it backwards too:

range('z', 'a');

This will generate an array like this:

array('a', 'b', 'c', 'd', 'e');

That will generate an array like this:

Array
(
    [0] => z
    [1] => y
    [2] => x
    [3] => w
    [4] => v
    [5] => u
    [6] => t
    [7] => s
    [8] => r
    [9] => q
    [10] => p
)

That is to say, range works for numbers and letters and can reverse the order.

5

You can get the same result using the while with a counter and a condition that would be used in the for, thus:

$contador = 0;
while($contador < 10) {
    echo "O contador agora é: " . $contador . "";
    $contador++;
}

Technically, in some pre-compiled languages, the command for is converted to a command while following this structure above. Anyway, it is an option.

Browser other questions tagged php for

You are not signed in. Login or sign up in order to post.