How to echo out sequential numbers? [closed]

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what I have is a number of various places in a class that calls out a number depending on a total number given and I would like to echo out that number. So for example:

Total count may be 4.

here is what may output:

echo "Layer-1" and "Color-1";

some additional coding... then call the same number again elsewhere in the code

echo "Placement-1";

some more coding... blah, blah

echo "FinalArt-1";

Then the loop starts again, only instead of -1 it is -2, and -3 and so on until the final number, in this case 4 has been satisfied.

Can anyone help on this? Newbie, in the house :/

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Here is a reference to a for - loop (here: http://php.net/manual/en/control-structures.for.php)

the first example in this reference is:

/* example 1 */

for ($i = 1; $i <= 10; $i++) {
    echo $i;
}

1. $i <= 10 need to be adjusted by you
2. echo $i; will output 1..10 in the example (also needs to be replaced by you)