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                # PHP gettimeofday() 函數 ## 定義和用法 gettimeofday() 函數返回一個包含當前時間信息的數組。 自 PHP 5.1.0 起有個可選參數 _return_float_,當其設置為 TRUE 時,gettimeofday() 會返回一個浮點數。 所返回的數組鍵的含義是: * "sec" - 自 Unix 紀元起的秒數 * "usec" - 微秒數 * "minuteswest" - 格林威治向西的分鐘數 * "dsttime" - 夏令時修正的類型 ### 語法 ``` gettimeofday(return_float) ``` | 參數 | 描述 | | --- | --- | | return_float | 可選。當其設置為 TRUE 時,gettimeofday() 會返回一個浮點數。 | ## 例子 ### 例子 1 ``` <?php echo(gettimeofday(true) . "<br /><br />"); print_r(gettimeofday()); ?> ``` 輸出: ``` 1138111447.4 Array ( [sec] => 1138111447 [usec] => 395863 [minuteswest] => -60 [dsttime] => 0 ) ``` ### 例子 2 ``` <?php $my_t=gettimeofday(); print("$my_t[sec].$my_t[usec]"); ?> ``` 輸出: ``` 1138197006.988273 ```
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