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Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
... there are at least two differences :
__DIR__ only exists with PHP >= 5.3
which is why dirname(__FILE__) is more widely used
__DIR__ is evaluated at compile-time, while dirname(__FILE__) means a function-call and is evaluated at execution-time
so, __DIR__ is (or, should be) faster.
As,...
What is the difference between is_a and instanceof?
...
Update
As of PHP 5.3.9, the functionality of is_a() has changed. The original answer below states that is_a() must accept an Object as the first argument, but PHP versions >= 5.3.9 now accept an optional third boolean argument $allow_strin...
win7 安装项目管理工具redmine2.5.1 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...n
bundle exec rake redmine:load_default_data
这时会提示输入语言，填写zh即可。
七、测试
在redmine的目录中执行：ruby script/rails server webrick -e production
E:\work\redmine-2.5.1>ruby script/rails server webrick -e production
==> Bootin...
file_put_contents - failed to open stream: Permission denied
...solution.
I use a shared linux hosting, when my admin changed the php to 5.3 I got many error for the "file_put_contents" code. try to test my plan:
In your host create a file like mytest.php, and put this code in and save:
<?php mail('Your-EMail','Email-Title','Email-Message'); ...
做程序猿的老婆应该注意的一些事情 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...
七，要听懂一些基本术语
比如说bug等、各编程语言名称。能听懂基本的IT笑话，比如前两天刚懂了类风湿的笑话。在iOS的拼写上，不要犯大众错误。
八，要崇拜乔布斯，要记住IT圈各大佬的名儿
没事儿多看...
What is the difference between tree depth and height?
...
According to Cormen et al. Introduction to Algorithms (Appendix B.5.3), the depth of a node X in a tree T is defined as the length of the simple path (number of edges) from the root node of T to X. The height of a node Y is the number of edges on the longest downward simple path from Y to ...
Hidden Features of PHP? [closed]
...);
public static function __callStatic($funcName, $args); // as of PHP 5.3
// on serialize() / unserialize()
public function __sleep();
public function __wakeup();
// conversion to string (e.g. with (string) $obj, echo $obj, strlen($obj), ...)
public function __toString();
...
Why are there no ++ and -- operators in Python?
...ed" instructions corresponding to *++p and *p++, respectively. See section 5.3 of the manual if horribly curious.
As compilers are smart enough to handle the high-level optimization tricks built into the syntax of C, they are just a syntactic convenience now.
Python doesn't have tricks to convey ...
Worth switching to zsh for casual use? [closed]
...
I use zsh 5.3 and get command not found: age with print *(e:age today now:)
– Timo
Feb 5 '18 at 13:34
add a co...
Cannot ping AWS EC2 instance
...p_seq=5 ttl=64 time=3.8 ms
64 bytes from 10.0.0.14: icmp_seq=6 ttl=64 time=5.3 ms
64 bytes from 10.0.0.14: icmp_seq=7 ttl=64 time=6.5 ms
64 bytes from 10.0.0.14: icmp_seq=8 ttl=64 time=3.5 ms
64 bytes from 10.0.0.14: icmp_seq=9 ttl=64 time=21.0 ms
64 bytes from 10.0.0.14: icmp_seq=10 ttl=64 time=3.5...