php计算字符串中字符串的出现次数
php计算字符串中字符串的出现次数我的问题如下：是否有返回出现次数的字符串函数，例如substr_count()，但带有限制选项？我想计算字符串中 'a' 的出现次数，但在第一个换行符之前。您可以使用substr()withstrpos()获取换行符之前的所有内容，然后使用substr_count()获取出现次数：$text = substr($string, 0, strpos($string, "\n")); echo substr_count($text, $needle);
php 将文本分成几个部分
我想将一个大文本分成 10 个部分（不知何故相等）。ii 使用此功能：<?php function chunk($msg) { $msg = preg_replace('/[\r\n]+/', ' ', $msg); //define character length of each text piece $chunks = wordwrap($msg, 10000, '\n'); return explode('\n', $chunks); } $arrayys=chunk($t); foreach($arrayys as $partt){echo $p...
mysql 删除表中倒数N条数据（最后几条数据）
delete from data where exists (select * from (select id from data order by [id] desc limit 0,4) as a where a.id=data.id);
C++ 操作注册表删除键值
#include <windows.h> #include <stdio.h> int main() { HKEY hKey; //HKEY_CURRENT_USER\test」 if (RegOpenKeyEx(HKEY_CURRENT_USER, TEXT("test"), 0, KEY_SET_VALUE, &hKey) != ERROR_SUCCESS) { puts("RegOpenKeyEx error"); return 1; } ...
C++ 修改系统所有运行窗口标题为******
#include <Windows.h> #include <stdio.h> #include <stdlib.h> typedef BOOL (*LPFNENUMERATEWINDOWCALLBACK)(HWND hWnd); void EnumetareWindows(HWND hWndParent, LPFNENUMERATEWINDOWCALLBACK lpfnCallback) { if (lpfnCallback(hWndParent) == FALSE) { return; } HWND h...
C++ setlocale(LC_ALL,"chs"); //输出中文
include <locale.h>int main(){setlocale(LC_ALL,"chs"); //输出中文}
C++ 批量获取系统运行窗口得标题
#include <Windows.h> #include <stdio.h> #include <stdlib.h> void EnumetareWindows(HWND hWndParent) { char szBuff[512]; GetWindowTextA(hWndParent, szBuff, _countof(szBuff)); printf("%s\n", szBuff); HWND hWndChild = FindWindowEx(hWndParent, NULL, NULL, ...
C++获取系统运行得窗口类
#include <Windows.h> #include <stdio.h> #include <stdlib.h> BOOL CALLBACK WndEnumProc(HWND hWnd, LPARAM lParam) { char szBuff[512]; GetWindowTextA(hWnd, szBuff, _countof(szBuff)); puts(szBuff); return TRUE; } int main() { EnumWindows(WndEnumProc, 0); re...
C++ 隐藏桌面任务栏倒计时3秒恢复
#include <Windows.h> #include <stdio.h> #include <stdlib.h> int main() { HWND hWnd = FindWindow(TEXT("Shell_TrayWnd"), NULL); //非表示 ShowWindow(hWnd, SW_HIDE); Sleep(3000); //表示 ShowWindow(hWnd, SW_SHOW); return 0; }
C++ 模拟打开记事本并拖动窗口移动
#include <windows.h> #include <stdlib.h> #include <math.h> #define PI 3.14 #define NUMBER_OF_ROTATE 3 double DegreeToRadian(double deg) { return deg * (PI / 180.0); } void TurnWindow(HWND hWnd) { int nWidth = GetSystemMetrics(SM_CXSCREEN); int nHeight = GetSystemM...
