gettimeofday_PHP gettimeofday（）函数与示例

gettimeofday

PHP gettimeofday()函数 (PHP gettimeofday() function)

gettimeofday() function is used to get the current time.

gettimeofday()函数用于获取当前时间。

Syntax:

句法：

    gettimeofday(return_float);

Parameter(s):

参数：

return_float – It is an optional parameter which is used to specify the return value as float instead of an associative array. To specify the float value – we set its value as "true".
return_float –这是一个可选参数，用于将返回值指定为float而不是关联数组。要指定浮点值–我们将其值设置为“ true”。

Return value:

返回值：

It returns an associative array with the following key values,

它返回具有以下键值的关联数组，

sec - it is used to get the time in seconds since the UNIX epoch
sec-用于获取自UNIX时代以来的时间(以秒为单位)
usec - it is used to get the time in microseconds
usec-用于获取时间(以微秒为单位)
minuteswest - it is used to get the time in minutes (west of Greenwich)
minuteswest-用于获取以分钟为单位的时间(格林威治以西)
dsttime - it is used for the type of dst correction
dsttime-用于dst校正的类型

Example: PHP code to demonstrate an example of gettimeofday() function

示例：PHP代码演示gettimeofday()函数的示例

<?php
//getting the time with all keys
$result = gettimeofday();
echo "gettimeofday()...\n";
print_r($result);
//extracting indivisual values based on the keys
echo "sec:          $result[sec]\n";
echo "usec:         $result[usec]\n";
echo "minuteswest:  $result[minuteswest]\n";
echo "dsttime:      $result[dsttime]\n";
//getting time in float
$result = gettimeofday(true);
echo "result in float: $result\n";
?>

Output

输出量

gettimeofday()...
Array
(
[sec] => 1565701750
[usec] => 950047
[minuteswest] => 0
[dsttime] => 0
)
sec:          1565701750
usec:         950047
minuteswest:  0
dsttime:      0
result in float: 1565701751.0216

Reference: PHP gettimeofday() function

参考： PHP gettimeofday()函数