How to find out why the execution of a php script is interrupted?

Question

PHP

noticed interruptions in the execution of the php script in cycles.
I run in console.
does not display any errors, windows 10 x64, 8GB memory, i7-4500U 1.80GHz processor
sample code

error_reporting (E_ALL);
set_time_limit(0);
for($i = 0; $i < 5000 ;$i++ ){
     echo $i.' ';
}

The cycle never ends. It always breaks in different places. It can also break at 5.
The foreach loop is exactly the same.
Tell me which way to dig in my first race.

Answer 1

try {
    for($i = 0; $i < 5000 ;$i++ ){
      echo $i.' ';
    }
} catch (Exception $e) {
    echo  $e->getMessage(), "\n";
}

I also assume that max_excecution_time is not enough