Regular expressions for a range of unicode points PHP

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You can use:

$foo = preg_replace('/[^\w$\x{0080}-\x{FFFF}]+/u', '', $foo);
  • \w – is equivalent of [a-zA-Z0-9_]
  • \x{0080}-\x{FFFF} to match characters between code points U+0080andU+FFFF`
  • /u for unicode support in regex

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