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boost::filesystem指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...统中的操作可以在多个进程中异步进行，这可能引起许多问题，也就是说文件系统不是串行系统。
文件系统具有很大的系统相关性，不同的操作系统提供了不同的文件系统，相同的操作系统也可以存在众多区别。这使得编写具...
Create JSON-object the correct way
I am trying to create an JSON object out of a PHP array. The array looks like this:
5 Answers
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How to exclude file only from root folder in Git
...er, and I want to ignore that folder in repo root, its contained files and all descendent subfolders and their files? /folder/?
– CodeManX
Aug 23 '15 at 20:31
12
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How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?
...HTTP header:
header('Content-Type: text/html; charset=utf-8');
Note to call this function before any output has been sent to the client. Otherwise the header has been sent too and you obviously can’t change it any more. You can check that with headers_sent. See the manual page of header for mor...
Convert a date format in PHP
...ion to the original question. For more extensive conversions, you should really be using the DateTime class to parse and format :-)
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How to get current time in milliseconds in PHP?
...e in seconds since the Unix epoch accurate to the nearest microsecond (see PHP reference). It's actually very easy to test if you run the above code in a loop and display the milliseconds.
– laurent
Dec 18 '12 at 10:08
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How to get name of calling function/method in PHP? [duplicate]
...ow users like You :} stackoverflow.com/questions/190421/caller-function-in-php-5/… Now seriously, thanks!
– Dawid Ohia
Jan 21 '10 at 18:44
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How to drop unique in MySQL?
...swered Oct 14 '09 at 8:12
Wael DalloulWael Dalloul
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Using str_replace so that it only acts on the first match?
...
There's no version of it, but the solution isn't hacky at all.
$pos = strpos($haystack, $needle);
if ($pos !== false) {
$newstring = substr_replace($haystack, $replace, $pos, strlen($needle));
}
Pretty easy, and saves the performance penalty of regular expressions.
Bonus: If...
PHP expresses two different strings to be the same [duplicate]
...and 272E-3063 will both be float(0) because they are too small.
For == in php,
If you compare a number with a string or the comparison involves
numerical strings, then each string is converted to a number and the
comparison performed numerically.
http://php.net/manual/en/language.operato...