preg_replace in smarty for removing unicode symbols

Asked Jul 23 '18 at 11:36

Active Jul 24 '18 at 07:06

Viewed 398 times

I am using

{'/[\x2700-\xFFFF]/u'|preg_replace:'':'✅این یک تست است✅'}

to remove ✅ from the unicode text, but it does nothing.

Unicode hex for ✅ is 2705

EDIT: if i use {'/✅/u'|preg_replace:'':'✅این یک تست است✅'}

It returns correct string این یک تست است....strange!

edited Jul 24 '18 at 07:06

asked Jul 23 '18 at 11:36

Amir

I think it should be `'/[\x{2700}-\x{FFFF}]/u'` – Wiktor Stribiżew Jul 23 '18 at 11:37
To strip off one single codepoint you don't need a range. – revo Jul 23 '18 at 11:38
@revo, it is an example, but actually it is a range. – Amir Jul 23 '18 at 11:39
@WiktorStribiżew, thanks but no, it does not work – Amir Jul 23 '18 at 11:40
And `{'✅این یک تست است✅'|regex_replace:'/[\x{2700}-\x{FFFF}]/u':''}`? – Wiktor Stribiżew Jul 23 '18 at 11:42
@WiktorStribiżew, It returns null. – Amir Jul 23 '18 at 11:45
I tested `regex_replace` already but nothing. – Amir Jul 23 '18 at 11:45
@WiktorStribiżew Actually it should be `\x2700` not `\x{2700}` – Amir Jul 23 '18 at 11:51
@Amir In PHP regex, Unicode code points should be written with `\x{XXXX}` syntax, see [this answer](https://stackoverflow.com/a/3141168/3832970). – Wiktor Stribiżew Jul 23 '18 at 11:52
Really, i don't understand the reason for down vote.. is this a very simple question? – Amir Jul 23 '18 at 11:56
@WiktorStribiżew, syntax does not work in smarty i mean – Amir Jul 23 '18 at 12:03
It must be due to `{` and `}`. Try `{'✅این یک تست است✅'|regex_replace:'/[\x{{2700}}-\x{{FFFF}}]/u':''}` – Wiktor Stribiżew Jul 23 '18 at 12:05
@WiktorStribiżew It returns `}-\x}]/u':''}` – Amir Jul 23 '18 at 12:14

0 Answers0