如何使用正则表达式选择日期[关闭]

Question

in the sentence :

 Effectuées le    : 06/09/2013 15:12:30

Could you help me please to select only 06/09/2013? Thank you

edit: I'm using dftotext php function to extract some files and I should match the date that is always written in thios way (regex+php)

edit2: I have tried :

(?<=es le    :)(.*)

But it takes all date+ time I would select only date http://www.rubular.com/r/6qmGKIAn00

Answer 1

The .* will match everything after the :, including the space and the time. To get just the date, be more specific than a wildcard that matches any character. Use this pattern:

#(\d{2}/\d{2}/\d{4})#

Capture group #1 will contain the date.

You tagged it as only regex and not php, but in PHP that would be:

preg_match('#(\d{2}/\d{2}/\d{4})#', $string_containing_the_sentence)

and the date will be assigned to $1.