年度季度PHP / Javascript模式

Question

I need pattern for a quarter of a year, for example 1/2015 -> first quarter of the 2015. 4/2015 -> fourth quarter of the year. I need to validate given value for being a quarter. How I can achieve that in javascript or php ? I guess that in PHP preg_match function is good way to go but I have difficulties with creating correct pattern...

Answer 1

It depends on the range of years that you'd like to support.

Assuming anything between quarter 1/1000 and 4/2999 should be accepted then the regular expression you want to use is

/^[1234]\/[12]\d{3}$/

For example this JavaScript function will test for valid quarters

function is_quarter(text) {
  return text.match(/^[1234]\/[12]\d{3}$/) != null;
}