Remove non-ascii characters from string

by

A regex replace would be the best option. Using $str as an example string and matching it using :print:, which is a POSIX Character Class:

$str="aAÂ";
$str = preg_replace('/[[:^print:]]/', '', $str); // should be aA

What :print: does is look for all printable characters. The reverse, :^print:, looks for all non-printable characters. Any characters that are not part of the current character set will be removed.

Note: Before using this method, you must ensure that your current character set is ASCII. POSIX Character Classes support both ASCII and Unicode and will match only according to the current character set. As of PHP 5.6, the default charset is UTF-8.

More Related Contents:

  1. Turning a SQL row into an array
  2. Generating random results by weight in PHP?
  3. Using PHP 5.5’s password_hash and password_verify function
  4. Unable to send email using Gmail SMTP server through PHPMailer, getting error: SMTP AUTH is required for message submission on port 587. How to fix?
  5. How do I prevent mails sent through PHP mail() from going to spam? [duplicate]
  6. I have an array of integers, how do I use each one in a mysql query (in php)? [duplicate]
  7. Ping site and return result in PHP
  8. How to create Helper Methods on Laravel not a Facade
  9. PDO closing connection
  10. Why PHP script is not workig in a web browser?
  11. Check if PHP-page is accessed from an iOS device
  12. Using password_hash and password_verify [duplicate]
  13. Fix malformed XML in PHP before processing using DOMDocument functions
  14. How to get the browser to cache images, with PHP?
  15. file_get_contents – failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found
  16. Type casting for user defined objects
  17. Check if “exec” is disabled [duplicate]
  18. How do I remove ‘index.php’ from URL in CodeIgniter?
  19. Disable add to cart button for an array of products IDs in WooCommerce
  20. How to find a whole word in a string in PHP without accidental matches?
  21. Using $this inside a static function fails
  22. How can I catch an error caused by mail()?
  23. Password_Hash not working on my PHP login
  24. Accessing Files Relative to Bundle in Symfony2
  25. Formatting an SQL timestamp with PHP
  26. ErrorException : implode(): Passing glue string after array is deprecated. Swap the parameters
  27. Cannot figure out how to run a mysqli_multi_query and use the results from the last query
  28. refresh a part of webpage in php [closed]
  29. PHP add up two time variables
  30. Composer install error – requires ext_curl when it’s actually enabled

Leave a Comment