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程序员之网络安全系列（二）：如何安全保存用户密码及哈希算法 - 更多技术 ...
...来我才想起可以用穷举法，最多就999次不就打开了？那么问题来了，你的密码箱还安全吗？
彩虹表
除了穷举法外，由于之前的密码泄露，那么攻击者们，手上都有大量的彩虹表，比如”I love you”,生日等等，这个表保存了这些...
Generate random 5 characters string
...tuvwxyz"), 0, $length);
more details: http://forum.arnlweb.com/viewtopic.php?f=7&t=25
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Correctly determine if date string is a valid date in that format
...t;format($format) === $date;
}
[Function taken from this answer. Also on php.net. Originally written by Glavić.]
Test cases:
var_dump(validateDate('2013-13-01')); // false
var_dump(validateDate('20132-13-01')); // false
var_dump(validateDate('2013-11-32')); // false
var_dump(validateDate('2...
Algorithm to get the excel-like column name of a number
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I have translated this PHP script to JS: gist.github.com/terox/161db6259e8ddb56dd77
– terox
Oct 5 '15 at 10:50
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How to var_dump variables in twig templates?
... print_r(), I opened vendor/twig-extensions/lib/Twig/Extensions/Node/Debug.php and changed print_r( to d(
PS. I would still like to know how/where to grab the $twig environment to add filters and extensions.
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php var_dump() vs print_r()
What is the difference between var_dump() and print_r() in terms of spitting out an array as string?
12 Answers
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MySQL “WITH” clause
... a feature request for MySQL since January 2006: http://bugs.mysql.com/bug.php?id=16244
Other RDBMS products that support common table expressions:
Oracle 9i release 2 and later:
http://www.oracle-base.com/articles/misc/with-clause.php
Microsoft SQL Server 2005 and later:
http://msdn.microsoft.com/...
Single Sign On across multiple domains [closed]
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There is a master domain, login.mydomain.com with the script master_login.php that manages the logins.
Each client domain has the script client_login.php
All the domains have a shared user session database.
When the client domain requires the user to be logged in, it redirects to the master domain ...
What does __FILE__ mean in Ruby?
...ains the path to the file relative to where it's being executed from.
In PHP __FILE__ is the full path (which in my opinion is preferable). This is why, in order to make your paths portable in Ruby, you really need to use this:
File.expand_path(File.dirname(__FILE__) + "relative/path/to/file")
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PHP code to remove everything but numbers
....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f6604455%2fphp-code-to-remove-everything-but-numbers%23new-answer', 'question_page');
}
);
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