如何删除所有垃圾字符，但在PHP中通过正则表达式保留货币符号？

Question

Here is my code in php

<?php
$output = "Clean this copy of invalid non ASCII ¥ äócharacters.";
$output = preg_replace('/[^(\x20-\x7F\p{Sc})]/','',$output);    
echo($output);
?>

Here I want to keep any currency symbols as it is and need to remove junk characters .

What changes should I make in regex for this issue ?

Thanks in advance

Answer 1

You need to add the u modifier to the RegEx and it works nicely:

$output = 'Clean this copy of invalid non ASCII ¥$€ äócharacters';
$output = preg_replace('/[^(\x20-\x7F\p{Sc})]/u','',$output);    

Outputs

Clean this copy of invalid non ASCII ¥$€ characters.