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Closing browser window when php is in execution

what exactly is happening when PHP is putting contents (1 MB for example) in a file and the user closes the tab? Could the file be corrupted? How can I avoid that? Thanks a lot

Solution

  • This is more a client-side issue...

    I solved this problem using Javascript's window.onbeforeunload and window.onunload functions:

    <head>
<script>
var invalid_exit=0;
var submitted=0;

window.onbeforeunload = function(){ 
    if (invalid_exit==1  && submitted==0 ){
        return 'You will lose your progress!';
    }
}

window.onunload = function(){ 
    if (invalid_exit==1  && submitted==0 ){
    //ajax call when an invalid exit is happening...        
    }
</script>
</head>

    In this case, I used to control variables: invalid_exit and submitted....

    You can check if a user clicks a submit button(submitted=1), closes the browser(invalid_exit=0), refreshes the page(invalid_exit=0), etc... Depending on your requirement....

    With Jquery you can control every event...

    I hope this can help you out!!!