I am storing the users logging into a site in a .txt file .I want to delete their names when they close the browser directly.I am using php code.Is they a way to delete the name ?
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How are you storing them? What have you tried? Stack is not going to create your website for you. – Dummy Code Jun 21 '13 at 16:50
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Please Provide your code? – Saleh Jun 21 '13 at 16:50
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1possible duplicate of [remove information from mysql table when user close his Browser](http://stackoverflow.com/questions/2195581/remove-information-from-mysql-table-when-user-close-his-browser) – gregmac Jun 21 '13 at 16:50
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2Short answer is : Don't do that. There's a better way to plan your application. – Dany Caissy Jun 21 '13 at 16:53
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There's no sure-fire way to tell if the user has closed his or her web browser. Trying to catch such an action w/ JavaScript will undoubtedly lead to bugs. The only thing you can do is delete said usernames after a pre-defined period of inactivity. If the user hasn't carried out any actions within the pre-defined timeframe, assume that they are inactive.
Wayne Whitty
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how do we know that he is not doing activity when the browser itself is closed? – user2509748 Jun 21 '13 at 17:00
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To remove the line of the text file in PHP: PHP Remove line containing string from a text file
To make a request on unload: JavaScript, browsers, window close - send an AJAX request or run a script on window closing
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As Wayne said, there's no sure-fire way, but one thing you could do is use JavaScript to check whether the user closed the tab, and then send an AJAX call to a PHP script that deletes the username from the file.
LonelyWebCrawler
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1You can use `onbeforeunload` but very few things are allowed, and you certainly need to _finish fast_ or the browser will cut you off. – Halcyon Jun 21 '13 at 16:55
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1No, because it's likely not going to work and `onbeforeunload` is the wrong approach. What if the user has two open tabs and closes one? – Halcyon Jun 21 '13 at 17:10
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@Frits van Campen He cannot open two browsers/tabs with same name.I use the same .txt file n check if already exists before a person logs in.I have even this problem of not able to delete the user when he directly closes. – user2509748 Jun 21 '13 at 17:27