PHP replace all dots to comma

Question

I have string

10.2, 200.3, 33.00

and I want it to be replaced as

10,2, 200,3, 33,00

I tried

preg_replace("/[.]$/","/\d[,]$/",$input);

but it is not replacing!

I can't use str_replace because it's task in university

why not use [str_replace](http://php.net/manual/en/function.str-replace.php) — sachleen, May 04 '13 at 18:05
this should be simple, you really shouldn't even need a regex for just replacing '.' with ',' — aaronman, May 04 '13 at 18:05
It doesn't, his question is dumb, that's why this is a comment not an answer — aaronman, May 04 '13 at 18:07
_“I can't use str_replace because it's task in university”_ − so they are trying to make people more _stupid_ at your university …? :-p — CBroe, May 04 '13 at 19:54
If you're learning this stuff at university and you're stuck, why can't you ask your tutor? Stackoverflow may give you a direct answer to the question at hand, but the tutor's job is to help you understand it, which is what you actually need. — Spudley, May 04 '13 at 20:14

score 15 · Answer 1 · answered May 04 '13 at 18:05

15

Do not use regular expresion when dumb str_replace() suffices:

$str = str_replace('.', ',', $str)

answered May 04 '13 at 18:05

Marcin Orlowski

I like how you called str_replace dumb! Maybe he is using using regex for a different reason. – Dave Chen May 04 '13 at 18:10
2

@DavidChen that is something op should come out clear with(and i hope he does)..as it stands from the question and example,the answer in its current form is correct – Anirudha May 04 '13 at 18:17
I cant use this, this is my task in university – user2287965 May 04 '13 at 18:22

score 11 · Accepted Answer · edited Dec 10 '22 at 20:45

11

preg_replace('/\./', ',', $input);

This would replace all . dots with ,.

preg_replace('/(\d+).(\d+)/', '$1,$2', $input);

This is more specific to your need. $1 replaces first digit as in parenthesis; $2 replaces second.

edited Dec 10 '22 at 20:45

Marcin Orlowski

answered May 04 '13 at 19:30

VoidPointer

smm · Answer 3 · 2013-05-04T18:39:05.867

2

You can try this

preg_replace('/[^0-9\s]/', ',', $input)

but it is better if you use

str_replace('.', ',', $input)

as Marcin answered.

edited May 04 '13 at 18:39

answered May 04 '13 at 18:26

smm

3 Answers3