gsub

[Skream]

i gotta the following code 

$cpf = "09551130401";
$returnValue = preg_replace('/^(\\d{3})(\\d{3})(\\d{3})(\\d{2})/', '$1.$2.$3-$4', $cpf, -1);

and this works fine

I've tried to do the same in lua but it doenst work

	local cpf = tostring(09551130401) 
	
	print(string.gsub(cpf, '/^(\\d{3})(\\d{3})(\\d{3})(\\d{2})/',  '$1.$2.$3-$4'))
	print(cpf)

 

Edited July 10, 2018 by Skream

[Addlibs]

Lua patterns are not the same thing as regular expressions. Firstly, Lua patterns don't have quantifiers {n} I believe, so you have to expand the pattern:

^(\\d{3})(\\d{3})(\\d{3})(\\d{2})

 into 

^(\\d\\d\\d)(\\d\\d\\d)(\\d\\d\\d)(\\d\\d)

Secondly, Lua patterns use different notation (%d rather than \d):

^(%d%d%d)(%d%d%d)(%d%d%d)(%d%d)

and to use the captures you also use % rather than $

local cpf = string.format("%011d", 09551130401) -- format the number into an 11 digit number (makes sure the leading zeros are there)
print(string.gsub(cpf, '^(%d%d%d)(%d%d%d)(%d%d%d)(%d%d)', '%1.%2.%3.%4')) -- "095.511.304.01"
print(cpf) -- "09551130401"

Read more about Lua patterns on the Lua manual and lua-users.org

Edited July 10, 2018 by MrTasty

[Skream]

3 hours ago, MrTasty said:

Lua patterns are not the same thing as regular expressions. Firstly, Lua patterns don't have quantifiers {n} I believe, so you have to expand the pattern:

^(\\d{3})(\\d{3})(\\d{3})(\\d{2})

 into 

^(\\d\\d\\d)(\\d\\d\\d)(\\d\\d\\d)(\\d\\d)

Secondly, Lua patterns use different notation (%d rather than \d):

^(%d%d%d)(%d%d%d)(%d%d%d)(%d%d)

and to use the captures you also use % rather than $

local cpf = string.format("%011d", 09551130401) -- format the number into an 11 digit number (makes sure the leading zeros are there)
print(string.gsub(cpf, '^(%d%d%d)(%d%d%d)(%d%d%d)(%d%d)', '%1.%2.%3.%4')) -- "095.511.304.01"
print(cpf) -- "09551130401"

Read more about Lua patterns on the Lua manual and lua-users.org

I tried your example here and I got a negative number output

Edited July 10, 2018 by Skream

[Skream]

found a solution here https://wiki.multitheftauto.com/wiki/PregReplace

thank you @MrTasty

Edited July 10, 2018 by Skream