PHP regex - Remove special characters from a string

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This will remove all non-ascii characters / special characters from a string.

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  1. //Remove from a single line string
  2. $output = "Likening ‘not-critical’ with";
  3. $output = preg_replace('/[^(\x20-\x7F)]*/','', $output);
  4. echo $output;
  6. //Remove from a multi-line string
  7. $output = "Likening ‘not-critical’ with \n Likening ‘not-critical’ with \r Likening ‘not-critical’ with. ' ! -.";
  8. $output = preg_replace('/[^(\x20-\x7F)\x0A\x0D]*/','', $output);
  9. echo $output;


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