PHP 两个日期字符串之间的天数差异

Question

I have these two strings:

20/3/2020
30/3/2020

And I want to get the difference in days between them so I use this code:

$dateS = DateTime::createFromFormat("d/M/Y", "20/3/2020");
$dateE = DateTime::createFromFormat("d/M/Y", "30/3/2020");

echo $dateE->diff($dateS)->days;

But I always get a crash with this code

Fatal error: Uncaught Error: Call to a member function diff() on bool

Any idea what can be the problem?

Answer 1

Your date format string is incorrect. M is a format parameter meaning

A short textual representation of a month, three letters ex. Jan through Dec

If your months will not have a leading zero you need to use n :

<?php
$dateS = DateTime::createFromFormat("d/n/Y", "20/3/2020");
$dateE = DateTime::createFromFormat("d/n/Y", "30/3/2020");

echo $dateE->diff($dateS)->days;

Output:

10

See the manual for what each format parameter represents.