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<?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;
Output for git.master, git.master_jit, rfc.property-hooks
ASCII pattern wtih ASCII characters string(62) "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" ASCII pattern wtih unicode characters string(62) "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" ASCII pattern wtih mixed characters string(124) "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" Unicode pattern wtih ASCII characters NULL Unicode pattern wtih unicode characters string(692) "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzª²³µ¹º¼½¾ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿĀāĂ㥹ĆćĈĉĊċČčĎďĐđĒēĔĕĖėĘęĚěĜĝĞğĠġĢģĤĥĦħĨĩĪīĬĭĮįİıIJijĴĵĶķĸĹĺĻļĽľĿŀŁłŃńŅņŇňʼnŊŋŌōŎŏŐőŒœŔŕŖŗŘřŚśŜŝŞşŠšŢţŤťŦŧŨũŪūŬŭŮůŰűŲųŴŵŶŷŸŹźŻżŽžſƀƁƂƃƄƅƆƇƈƉƊƋƌƍƎƏƐƑƒƓƔƕƖƗƘƙƚƛƜƝƞƟƠơƢƣƤƥƦƧƨƩƪƫƬƭƮƯưƱƲƳƴƵƶƷƸƹƺƻƼƽƾƿǀǁǂǃDŽDždžLJLjljNJNjnjǍǎǏǐǑǒǓǔǕǖǗǘǙǚǛǜǝǞǟǠǡǢǣǤǥǦǧǨǩǪǫǬǭǮǯǰDZDzdz" Unicode pattern wtih mixed characters NULL

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