Online PHP editor | refs for hSVV5

<?php $ascii = implode('', range("\x00", "\xFF")); $unicode = ''; for ($i=0;$i<500;$i++) { $unicode .= mb_chr($i, 'UTF-8'); } $mixed = $ascii . $unicode; $pattern = '/[\W_]/'; echo 'ASCII pattern wtih ASCII characters' . \PHP_EOL; var_dump(preg_replace($pattern, '', $ascii)); echo \PHP_EOL; echo 'ASCII pattern wtih unicode characters' . \PHP_EOL; var_dump(preg_replace($pattern, '', $unicode)); echo \PHP_EOL; echo 'ASCII pattern wtih mixed characters' . \PHP_EOL; var_dump(preg_replace($pattern, '', $mixed)); echo \PHP_EOL; echo 'Unicode pattern wtih ASCII characters' . \PHP_EOL; var_dump(preg_replace($pattern . 'u', '', $ascii)); echo \PHP_EOL; echo 'Unicode pattern wtih unicode characters' . \PHP_EOL; var_dump(preg_replace($pattern . 'u', '', $unicode)); echo \PHP_EOL; echo 'Unicode pattern wtih mixed characters' . \PHP_EOL; var_dump(preg_replace($pattern. 'u', '', $mixed)); echo \PHP_EOL;