大约有 2,500 项符合查询结果（耗时：0.0285秒） [XML]
PHP - concatenate or directly insert variables in string
... You can insert functions semi-indirectly into strings via PHP 5.3 variable functions. $x = function() { ...}; $string = "hello {$x(blah blah blah)}", which works around the "restriction".
– Marc B
Apr 9 '11 at 16:16
...
How do I recursively delete a directory and its entire contents (files + sub dirs) in PHP?
...es use of the SKIP_DOTS flag introduced with the FilesystemIterator in PHP 5.3.0. Of course, the $todo could be an if/else. The important point is that CHILD_FIRST is used to iterate over the children (files) first before their parent (folders).
...
How to round float numbers in javascript?
...more flexibility:
Math.round10(5.25, 0); // 5
Math.round10(5.25, -1); // 5.3
Math.round10(5.25, -2); // 5.25
Math.round10(5, 0); // 5
Math.round10(5, -1); // 5
Math.round10(5, -2); // 5
Upd (2019-01-15). Seems like MDN docs no longer have this helper funcs. Here's a backup with example...
How do I get the current date and time in PHP?
...mat
echo $now->getTimestamp(); // Unix Timestamp -- Since PHP 5.3
And to specify the timezone:
$now = new DateTime(null, new DateTimeZone('America/New_York'));
$now->setTimezone(new DateTimeZone('Europe/London')); // Another way
echo $now->getTimezone();
...
Best Practices: working with long, multiline strings in PHP?
...is kind of situations, I always use Heredoc (Or Nowdoc, if using PHP >= 5.3) : easy to write, easy to read, no need for super-long lines, ...
For instance :
$var = 'World';
$str = <<<MARKER
this is a very
long string that
doesn't require
horizontal scrolling,
and interpolates variable...
how to convert array values from string to int?
...
Use this code with a closure (introduced in PHP 5.3), it's a bit faster than the accepted answer and for me, the intention to cast it to an integer, is clearer:
// if you have your values in the format '1,2,3,4', use this before:
// $stringArray = explode(',', '1,2,3,4');...
Unicode and UTF-8 - C/C++ - 清泛网 - 专注C/C++及内核技术
...且不太好移植(Not Portable)
例如：char *s=“Good ,北京”;该C语言代码采用UTF-16编码后，字节序列中间有许多’\0’，’\0’ 会被识别为字符串的终止，strlen()函数不起用了。
2）、存储空间较大，造成存储及带宽的极大...
error C2440: “return”: 无法从“const Screen”转换为“Screen &” - C/...
...
{
os << contents << '\n';
return *this;
}
解决办法： c++语言规定，不能从const成员函数返回指向类对象的普通引用，const成员函数只能返回*this作为一个const引用。因此解决办法即是，把成员函数声明为 const Screen& display(std::ostrea...
jsoncpp 不能处理__int64(long long)类型数据 - C/C++ - 清泛网 - 专注C/C++及内核技术
...整数？Json起源于JavaScript，在js中数字的表示可能与高级语言中不一样， 如果一位数字32位表示不了那么js中应该一律都是用double表示， 所以说js中 大整数其实也是double， 这也就能解释为什么在jsoncpp中为什么没提供64为整数转化...
Github代码高亮显示、WebIDE代码编辑器都在使用它 - 开源 & Github - 清泛...
...
某云端在线编程网站使用ace效果：
支持Tab键，各种语言语法高亮、语法检查，代码收缩。提供了多种代码展示风格，不过它的缺陷是代码量相当大，二次开发相对比较复杂，而且引入的js、css很多，体积也不小，对服务器...