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How do I expire a PHP session after 30 minutes?

...a session timeout of your own. Both options mentioned by others (session.gc_maxlifetime and session.cookie_lifetime) are not reliable. I'll explain the reasons for that. First: session.gc_maxlifetime session.gc_maxlifetime specifies the number of seconds after which data will be seen as 'garb...
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How do I parallelize a simple Python loop?

...tead: pool = multiprocessing.Pool(4) out1, out2, out3 = zip(*pool.map(calc_stuff, range(0, 10 * offset, offset))) Note that this won't work in the interactive interpreter. To avoid the usual FUD around the GIL: There wouldn't be any advantage to using threads for this example anyway. You want t...
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Converting a string to a date in JavaScript

... function stringToDate(_date,_format,_delimiter) { var formatLowerCase=_format.toLowerCase(); var formatItems=formatLowerCase.split(_delimiter); var dateItems=_date.split(_delimiter); var monthIndex=f...
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Unzip a file with php

...pen('file.zip'); if ($res === TRUE) { $zip->extractTo('/myzips/extract_path/'); $zip->close(); echo 'woot!'; } else { echo 'doh!'; } Also, as others have commented, $HTTP_GET_VARS has been deprecated since version 4.1 ... which was a reeeeeally long time ago. Don't use it. Use the $_...
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When to use enumerateObjectsUsingBlock vs. for

...need to modify local variables" - not true; you can declare your locals as __block and they'll be writable in the block. enumerateObjectsWithOptions:usingBlock: supports either concurrent or reverse enumeration. with dictionaries, block based enumeration is the only way to retrieve the key and value...
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What are the applications of binary trees?

...oving from one level to the next requires one comparison, and there are log_2(m) levels, for a total of log_2(m) comparisons. In contrast, an n-ary tree will require log_2(n) comparisons (using a binary search) to move to the next level. Since there are log_n(m) total levels, the search will requi...
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How do you know when to use fold-left and when to use fold-right?

...ee it. It's "haskell-style pseudocode". :) – laughing_man Apr 21 '15 at 2:38 ...
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Instagram how to get my user id from username?

...request is made with the url below: https://www.instagram.com/{username}/?__a=1 E.g: This url will get all information about a user whose username is therock https://www.instagram.com/therock/?__a=1 Update i June-20-2019, the API is public now. No authentication required. Update in Decembe...
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Batch File; List files in directory, only filenames?

...answered May 3 '18 at 10:14 Mike_GreMike_Gre 8111 silver badge33 bronze badges ...
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URL rewriting with PHP

... You can essentially do this 2 ways: The .htaccess route with mod_rewrite Add a file called .htaccess in your root folder, and add something like this: RewriteEngine on RewriteRule ^/?Some-text-goes-here/([0-9]+)$ /picture.php?id=$1 This will tell Apache to enable mod_rewrite for this ...