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regular expression ?

Can someone let me know what this regex translate to?

"^(\+|00)[1-9][0-9]{3,20}$"

Thank you,
A
0
aej1973
Asked:
aej1973
1 Solution
 
Terry WoodsIT GuruCommented:
Produced by http://myregextester.com with the Explain option on:

  ^                        the beginning of the string
----------------------------------------------------------------------
  (                        group and capture to \1:
----------------------------------------------------------------------
    \+                       '+'
----------------------------------------------------------------------
   |                        OR
----------------------------------------------------------------------
    00                       '00'
----------------------------------------------------------------------
  )                        end of \1
----------------------------------------------------------------------
  [1-9]                    any character of: '1' to '9'
----------------------------------------------------------------------
  [0-9]{3,20}              any character of: '0' to '9' (between 3
                           and 20 times (matching the most amount
                           possible))
----------------------------------------------------------------------
  $                        before an optional \n, and the end of the
                           string
----------------------------------------------------------------------

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It looks to me like a pattern for (roughly!) matching an international phone number, having to start with either 00 or +.

Some values that would match are:
+1000
009000
+199999999999999999999
0
 
aej1973Author Commented:
Thank you.
0
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