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                            *   計算兩地之間的距離

| 傳入參 | 說明 |
| --- | --- |
| longitude1 | \[ 必填 \] 起點經度 |
| latitude1 | \[ 必填 \] 起點緯度 |
| longitude2 | \[ 必填 \] 終點經度 |
| latitude2 | \[ 必填 \] 終點緯度 |
| unit | \[ 選填 \] 單位 ( 1米 2公里 ) |
| decimal | \[ 選填 \] 精度 ( 保留小數位 ) |

| 回調參 | 說明 |
| --- | --- |
| \[ int \] | 距離數 |

*   案例

~~~
$obj = $T_D->count('37.731945','119.195994','26.056188','118.520289');
$obj = $T_D->count('37.731945','119.195994','26.056188','118.520289',2);
$obj = $T_D->count('37.731945','119.195994','26.056188','118.520289','',4);

~~~

> 630230.42 ( 米 )  
> 630.23 ( 公里 )  
> 630230.4203 ( 米 )
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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