How to obtain the value in a loop statement

How to obtain the value in a loop statement

for($i = 0; $i <= 2; $i++){  $i;}   echo $i;

In this case, why can't we get the value from the loop? so we can get the last one and change it to this.

for($i = 0; $i <= 2; $i++){    echo $i;} 

In this way, we can get all the values, but some statements don't want to be placed in the loop statements. Is there any way to get the values in the loop statements?

Reply to discussion (solution)

Use a variable (array or character) in the loop statement to save the value of each loop and call it outside the loop.

Not saved. of course, the last one is obtained each time.

This is the logic of your needs.

If the statement is placed outside the loop, this is okay. but how can I use a specific number of loops in the loop? How do you determine which time to use?

This is the logic of your needs.

If the statement is placed outside the loop, this is okay. but how can I use a specific number of loops in the loop? How do you determine which time to use?
I also think there is a logic problem. In fact, I want to get the value of the inner edge of the loop statement outside the loop statement, but I don't have any idea or code. I don't know how to write it.

Use a variable (array or character) in the loop statement to save the value of each loop and call it outside the loop.
This method is feasible, but how can I write the specific code? how can I write the code for the Cainiao to refer?

for($i = 0; $i <= 2; $i++){  $t[] = $i;} echo join(',', $t);

This is the logic of your needs.

If the statement is placed outside the loop, this is okay. but how can I use a specific number of loops in the loop? How do you determine which time to use?
I also think there is a logic problem. In fact, I want to get the value of the inner edge of the loop statement outside the loop statement, but I don't have any idea or code. I don't know how to write it.

Then you should first think about the logic and process. programming is actually to convert the logic into code... you can also say that you can help you sort out the logic in detail.