目录

PHP date_interval_format() 函数

❮ PHP 日期/时间参考

示例

计算两个日期之间的间隔,然后格式化间隔:

<?php
$date1=date_create("2013-01-01");
$date2=date_create("2013-02-10");
$diff=date_diff($date1,$date2);

// %a outputs the total number of days
echo $diff->format("Total number of days: %a.");
?>
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定义和用法

date_interval_format() 函数是 DateInterval::format() 的别名。

DateInterval::format() 函数用于格式化间隔。


语法

DateInterval::format( format)

参数值

Parameter Description
format Required. Specifies the format. The following characters can be used in the format parameter string:
  • % - Literal %
  • Y - Year, at least 2 digits with leading zero (e.g 03)
  • y - Year (e.g 3)
  • M - Month, with leading zero (e.g 06)
  • m - Month (e.g 6)
  • D - Day, with leading zero (e.g 09)
  • d - Day (e.g 9)
  • a - Total number of days as a result of date_diff()
  • H - Hours, with leading zero (e.g 08, 23)
  • h - Hours (e.g 8, 23)
  • I - Minutes, with leading zero (e.g 08, 23)
  • i - Minutes (e.g 8, 23)
  • S - Seconds, with leading zero (e.g 08, 23)
  • s - Seconds (e.g 8, 23)
  • F - Microseconds, at least 6 digits (e.g 004403, 235689)
  • f - Microseconds (e.g 4403, 235689)
  • R - Sign "-" when negative, "+" when positive
  • r - Sign "-" when negative, empty when positive

Note: Each format character must be prefixed by a % sign!



技术细节

返回值: 返回格式化的间隔
PHP 版本: 5.3+
PHP 变更日志: PHP 7.1:添加了FF参数

❮ PHP 日期/时间参考