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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...
WordPress asking for my FTP credentials to install plugins
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Try to add the code in wp-config.php:
define('FS_METHOD', 'direct');
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cleanest way to skip a foreach if array is empty [duplicate]
...oid nesting my code with an unnecessary if statement. If $items is empty php throws an error.
11 Answers
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What is 'YTowOnt9'?
Our (PHP) framework sometimes renders hidden inputs with value YTowOnt9 . I can't find that string anywhere in the (huge) codebase, and can't figure out where it came from. I decided to Google for that particular string, and the result surprised me. Over half a million - kind of random - hits. I ...
CruiseControl.Net 进行持续化集成 - IT产品资讯 - 清泛网 - 专注C/C++及内核技术
...ver服务，在启动之前，需要先解决一下可能最影响情绪的问题：我们知道windows services默认情况下是用本地系统账户运行的，可一般情况下我们会在当前操作用户下设置对vss共享目录的访问权限，比如当前windows运行账户为administra...
PHP Regex to check date is in YYYY-MM-DD format
...e specified format and the array_sum trick is a terse way of ensuring that PHP did not do "month shifting" (e.g. consider that January 32 is February 1). See DateTime::getLastErrors() for more information.
Old-school solution with explode and checkdate:
list($y, $m, $d) = array_pad(explode('-', $d...
MySQL, Check if a column exists in a table with SQL
...his works well for me.
SHOW COLUMNS FROM `table` LIKE 'fieldname';
With PHP it would be something like...
$result = mysql_query("SHOW COLUMNS FROM `table` LIKE 'fieldname'");
$exists = (mysql_num_rows($result))?TRUE:FALSE;
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Get Image Height and Width as integer values?
I've tried to use the PHP function getimagesize , but I was unable to extract the image width and height as an integer value.
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Show a PDF files in users browser via PHP/Perl
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<?php header('Content-type: application/pdf'); header('Content-Disposition: inline; filename="the.pdf"'); readfile('/dir/to/the.pdf'); ?>
– dimassony
Jan 13 '11 at 13:10
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Cannot pass null argument when using type hinting
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PHP 7.1 or newer (released 2nd December 2016)
You can explicitly declare a variable to be null with this syntax
function foo(?Type $t) {
}
this will result in
$this->foo(new Type()); // ok
$this->foo(null); // ok
$...