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PHP calculate age
...3', $tz)
->diff(new DateTime('now', $tz))
->y;
As of PHP 5.3.0 you can use the handy DateTime::createFromFormat to ensure that your date does not get mistaken for m/d/Y format and the DateInterval class (via DateTime::diff) to get the number of years between now and the target date...
开源跳板机(堡垒机)Jumpserver v2.0.0 使用说明 - 开源 & Github - 清泛网 ...
...管理员登陆 (什么，你忘记密码了？ 去查看邮件吧)
5.3 查看部门管理员相关功能
部门管理员相比超级管理员功能要少些，只能负责该部门的主机授权，用户管理，需要说明的是，新建的用户会默认属于本部门，新添加的主...
Is floating point math broken?
...malized), also called the mantissa, of the floating point number (e.g. the 5.3 in 5.3e5). The next sections go into more detail on the causes of hardware error on various floating point operations.
3. Cause of Rounding Error in Division
The main cause of the error in floating point division is the...
How to remove all leading zeroes in a string
...rim($str, '0');
} else {
$str = '0';
}
Or as was suggested (as of PHP 5.3), shorthand ternary operator can be used:
$str = ltrim($str, '0') ?: '0';
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Removing X-Powered-By
...ction_exists('header_remove')) {
header_remove('X-Powered-By'); // PHP 5.3+
} else {
@ini_set('expose_php', 'off');
}
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Get PHP class property by string
...
@goyote: It depends values and PHP version. In 5.3 it triggers an E_NOTICE because the property cannot be found, rather than an "error", since it is still valid PHP syntax. It's possible that $this->$property[$name] might actually succeed, although this is likely to be...
Error message Strict standards: Non-static method should not be called statically in php
...
Is (new ClassName)->method(); compatible with PHP 5.3 too?
– Jeff
Mar 22 '16 at 1:20
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PHP script - detect whether running under linux or Windows?
...rily the same OS that it is currently running on.
If you are on PHP >= 5.3 and just need to know whether you're running on Windows or not-Windows then testing whether one of the Windows-specific constants is defined may be a good bet, e.g.:
$windows = defined('PHP_WINDOWS_VERSION_MAJOR');
...
How do I put variables inside javascript strings?
...
util.format does this.
It will be part of v0.5.3 and can be used like this:
var uri = util.format('http%s://%s%s',
(useSSL?'s':''), apiBase, path||'/');
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获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...区域；
2 FAT 区域；
3 数据区域。
保留区域
因为 FAT版本的原因，总共出现了三种 FAT 格式 ： Fat12 ， Fat16 ，和 Fat32 。这三种版本的保留区域的差别是从第 37个字节开始的。下表列出了相同区域的字段的意义。
偏...