How can the variable $t1s1 be defined in order to end the loop in the PHP script?

To end the loop in the PHP script, the variable $t1s1 can be defined as a boolean flag that indicates whether the loop should continue or not. By setting $t1s1 to false when a certain condition is met, the loop will terminate. This can be achieved by adding an if statement within the loop that checks the value of $t1s1 and breaks out of the loop if it is false.

$t1s1 = true;

while ($t1s1) {
    // Loop logic here
    
    if (/* condition to end the loop */) {
        $t1s1 = false;
    }
}