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PHP array: count or sizeof?
To find the number of elements in a PHP $array , which is faster/better/stronger?
7 Answers
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BMP 和 DIB - C/C++ - 清泛网 - 专注C/C++及内核技术
...术的进步，以及显示设备的多样化，DDB位图的一些固有的问题开始浮现出来了。比如，它不能够存储（或者说获取）创建这张图片的原始设备的分辨率，这样，应用程序就不能快速的判断客户机的显示设备是否适合显示这张图片...
.NET4.5新特性 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...验证，你的服务器将会一直等在那里。
*当然，解决这个问题的最佳方案就是在用正则表达式做验证的时候设置一个超时时间。在.Net4.5中就有这个功能，像如下代码中那样就可以。从此之后，哪怕用户发来了恶意字符串，我们...
使用DOS命令 taskkill 结束本地进程，结束远程进程 - 更多技术 - 清泛网 - ...
...ill掉其他主机的进程（一般用于远程主机远程桌面服务有问题登不上时使用）。在DOS窗口，输入taskkill /f /im 进程名.exe /t
/f /im /t 表示指定进程名称，强制终止进程及子进程。参考帮助如下：
描述:
使用该工具按照进...
gcc自带内存泄漏、内存越界检测工具 - asan - C/C++ - 清泛网 - 专注C/C++及内核技术
...（加上-fsanitize=address编译选项，可以检查出更详细的内存问题，不加也能编译通过也能执行检查）
测试代码如下：
#include <iostream>
#include <string.h>
using namespace std;
int main() {
void* p = malloc(5);
memcpy(p, "123456", 6);
return 0;
}...
【免费开放】App Inventor 2 LLMAI2Ext 自研拓展：接入DeepSeek、Kimi、通...
...议不兼容。
猜测：大概率，你搭建平台的机器openssl版本问题或者java版本问题。好的，我试试app安装到手机试试！感谢，回答。在手机上是可以正常运行的。应该是服务器没设好。感谢分享，马上导入试试如何把图片发给大模...
Calculate number of hours between 2 dates in PHP
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The newer PHP-Versions provide some new classes called DateTime, DateInterval, DateTimeZone and DatePeriod. The cool thing about this classes is, that it considers different timezones, leap years, leap seconds, summertime, etc. And on top of that it's very easy to use. Here...
best practice to generate random token for forgot password
...d reminder token, and, if it is a one-time login credentials, then you actually have a data to protect (which is - whole user account)
So, the code will be as follows:
//$length = 78 etc
$token = bin2hex(random_bytes($length));
Update: previous versions of this answer was referring to uniqid()...
How to check that a string is an int, but not a double, etc.?
... (ctype_digit($testcase)) {
echo "The string $testcase consists of all digits.\n";
} else {
echo "The string $testcase does not consist of all digits.\n";
}
}
?>
The above example will output:
The string 1820.20 does not consist of all digits.
The string 10002 consists...
How do I immediately execute an anonymous function in PHP?
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For PHP7: see Yasuo Ohgaki's answer: (function() {echo 'Hi';})();
For previous versions: the only way to execute them immediately I can think of is
call_user_func(function() { echo 'executed'; });
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