using regex in replaceAll to replace multiple char in one go

Question

I have a phone number that i need to convert to a valid format to be send to a webservice validator. The phone number should be 10 char long and should contains only digits.

For instance, I should convert

 +567 231 34 34 to 5672313434 (567)231-34-34 to 5672313434

before sending

I have the solution which does the replacement in apex :

 String t = '+571 567 65 77'; String r = t.replaceAll('\\(',''); r = r.replaceAll('\\)',''); r = r.replaceAll('-',''); r = r.replaceAll('\\+',''); r = r.replaceAll('\\s',''); system.debug('## final result is :' + r);

Can I obtain the result in a single line?

+567 231 34 34 is not the same phone number as 5672313434. The first is a 8 digit number in chile (I have no idea if it's a valid 8 digit number), the second is a 10 digit number in whatever country you are currently in. In most of Europe +567 231 34 34 using only digits would be 005672313434, in the US it would be 0115672313434. — Taemyr
– Taemyr, Commented Feb 26, 2016 at 8:58

karthikselva · Accepted Answer · 2016-02-26 08:50:02Z

Try this:

String r = t.replaceAll('[^0-9]','');

Explanation:

Instead of hunting for invalid characters and removing them explicitly you can specify remove all characters other than numbers.

^ for not a given char
[0-9] for numbers ranging from 0 to 9
'' replace it with empty char (removes it from our string)

Ratan Paul · Accepted Answer · 2016-02-28 03:00:39Z

You can use ReplaceAll method

try Like this

String t = '(567)231-34-34'; String r = t.replaceAll('[^\\d]',''); system.debug('## final result is :' + r); String t1 = '+567 231 34 34'; String r1 = t1.replaceAll('[^\\d]',''); system.debug('## final result is :' + r1);

Reference:

^ - Negates character class.
\d - any digit character same as [0-9]

Debug logs

13:27:40:044 USER_DEBUG [3]|DEBUG|## final result is :5672313434
13:27:40:044 USER_DEBUG [7]|DEBUG|## final result is :5672313434

Another option

String t = '(567)231-34-34'; String r = t.replaceAll('[-+()s]',''); system.debug('## final result is :' + r); String t1 = '+567 231 34 34'; String r1 = t1.replaceAll('[-+()s]',''); system.debug('## final result is :' + r1);

Reference:

[ ] Demarcates a character class. To interpret literally, use a backslash.
[abc] is a character class that means "any character from a,b or c" (a characer class may use ranges, eg [a-d] = [abcd])

Debug logs

13:26:13:004 USER_DEBUG [3]|DEBUG|## final result is :5672313434
13:26:13:004 USER_DEBUG [7]|DEBUG|## final result is :567 231 34 34

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