How to know client interrupt request, when php is handling

Question

I'm trying, handle my program when client turn off browser or tab. while request php is not complete.

For example, i will save score to Database before browser or tab turn off

$i = 0;
$score = 0;
while($i++ < 100000){
    $score +=2;
}
$sql = "UPDATE games SET score=$score WHERE uid=123";
$conn = new Mysqli(params);
$conn->query($sql);

if current $i is 1000, request is handling and client turn off browser or tab. Therefore, below command is not handle.

$sql = "UPDATE games SET score=$score WHERE uid=123";
$conn = new Mysqli(params);
$conn->query($sql);

How to immediate, i can save current score to Database.

score 0 · Answer 1 · edited May 23 '17 at 11:43

The default PHP behavior is:

After a user closes the browser window/tab, the script will terminate if it either:

reaches its the max_execution_timeout setting (a PHP environment variable), or
attempts to output anything to the browser.

However, you can change this behavior by:

changing the max_execution_timeout setting to 0 (to allow for unlimited runtime) and
changing the ignore_user_abort setting (another PHP environment variable) to true.

How to know client interrupt request, when php is handling

1 Answers1