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本人微信僅支持探討學習

pcntl是php官方的多進程擴展，只能在linux環境使用 --enable-pcntl pcntLfork — 在當前進程當前位置產生分支（子進程）

fork是創建了一個子進程，父進程和子進程 都從fork的位置開始向下繼續執行，【不同的是父進程執行過程中，得到的fork返回值為子進程 號，而子進程得到的是 0。
```
`$pid = pcntl\_fork();
if($pid==0){
echo '我是子進程 id∶'.getmypid（）.PHP\_EOL;}else{
echo '我也是子進程'.$pid;````
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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