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How to sum all column values in multi-dimensional array?

...); Example with array_walk_recursive() for the general case Also, since PHP 5.5 you can use the array_column() function to achieve the result you want for the exact key, [gozhi], for example : array_sum(array_column($input, 'gozhi')); Example with array_column() for the specified key If you ...
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How do I purge a linux mail box with huge number of emails? [closed]

... Tue Jul 29 17:43 23/1016 "Cron <eric@ip-10-0-1-51> /usr/bin/php /var/www/sandbox/eric/c" N 2 Cron Daemon Tue Jul 29 17:44 23/1016 "Cron <eric@ip-10-0-1-51> /usr/bin/php /var/www/sandbox/eric/c" & d * & quit Then check your mail again: eric@dev ~ $ mail N...
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What is the __del__ method, How to call it?

...__ in a superclass, though it is not clear if this is in method resolution order (MRO) or just calling each superclass. Having a __del__ means that the garbage collector gives up on detecting and cleaning any cyclic links, such as losing the last reference to a linked list. You can get a list of the...
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How to improve Netbeans performance?

...xe" --jdkhome "C:\Program Files\Java\jdk1.6.0_10" -J-Dorg.netbeans.modules.php.dbgp.level=400 -J-Xmx1024m -J-Xms256m Since I add that attribute, my NetBeans run so fast! Another way to try More Reference Here In the etc directory under your Netbeans-Home, edit the file netbeans.conf file. -Xms a...
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Assign an initial value to radio button as checked

...nchecked. <input type="radio" name="gender" value="male" required <?php echo "checked"; ?>/> <input type="radio" name="gender" value="female" required /> This will makes the "male" radio button checked. <input type="radio" name="gender" value="male" <?php echo "checked"; ...
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Are tuples more efficient than lists in Python?

... lists, moving this structure to tuples decreased lookup times by multiple orders of magnitude for multiple lookups. I believe this to be due to the greater cache locality of the tuple once you start using the tuple due to the removal of the second layer of indirection you demonstrate. ...
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How do I fix “Failed to sync vcpu reg” error?

... this is really a problem for me.. Im running a php app which provides api in virtual box on my macbook and I can't develop android app which needs to connect to that api... I guess I will need to deploy the php app on some server and develop on that, oh well ...
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How to REALLY show logs of renamed files with git?

...o -- gitster -- in commit 26effb8, 13 Apr 2016) diffcore: fix iteration order of identical files during rename detection If the two paths 'dir/A/file' and 'dir/B/file' have identical content and the parent directory is renamed, e.g. 'git mv dir other-dir', then diffcore reports the follow...
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CSS container div not getting height

...oating the children which means they "float" in front of the container. In order to take the correct height, you must "clear" the float The div style="clear: both" clears the floating an gives the correct height to the container. see http://css.maxdesign.com.au/floatutorial/clear.htm for more info ...
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How to shrink/purge ibdata1 file in MySQL

...r server to use separate files for each table you need to change my.cnf in order to enable this: [mysqld] innodb_file_per_table=1 http://dev.mysql.com/doc/refman/5.5/en/innodb-multiple-tablespaces.html As you want to reclaim the space from ibdata1 you actually have to delete the file: Do a mys...