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run code in 150+ php & hhvm versions
Bugs & Features
<?php $result = "°Freen\x18 ew°\x90ɮ\xc2"; //$result = trim($result,"\xc2"/*"\xa0"*/); //echo preg_replace('#[\x00-\x1F\x7F-\x9F]#S', '', $result); $result = preg_replace('~[\x{0000}-\x{001F}\x{007F}-\x{00a0}]~', '', $result); //reject overly long 2 byte sequences, as well as characters above U+10000 and replace with ? $result= preg_replace('//[\x00-\x08\x10\x0B\x0C\x0E-\x19\x7F]'. //'|[\x00-\x7F][\x80-\xBF]+'. //'|([\xC0\xC1]|[\xF0-\xFF])[\x80-\xBF]*'. '/|[\xC2-\xDF]((?![\x80-\xBF])|[\x80-\xBF]{2,})'. '|[\xE0-\xEF](([\x80-\xBF](?![\x80-\xBF]))|(?![\x80-\xBF]{2})|[\x80-\xBF]{3,})/S', '', $result ); echo $result;
Output for 5.2.3 - 7.1.0
Warning: preg_replace(): Unknown modifier '[' in /in/q47UH on line 18
Output for 4.4.3 - 4.4.9, 5.1.3 - 5.2.2
<br /> <b>Warning</b>: preg_replace() [<a href='function.preg-replace'>function.preg-replace</a>]: Unknown modifier '[' in <b>/in/q47UH</b> on line <b>18</b><br />
Output for 5.0.0 - 5.1.2
<br /> <b>Warning</b>: preg_replace() [<a href='function.preg-replace'>function.preg-replace</a>]: Compilation failed: range out of order in character class at offset 11 in <b>/in/q47UH</b> on line <b>9</b><br /> <br /> <b>Warning</b>: preg_replace() [<a href='function.preg-replace'>function.preg-replace</a>]: Unknown modifier '[' in <b>/in/q47UH</b> on line <b>18</b><br />
Output for 4.3.11 - 4.4.2
<br /> <b>Warning</b>: preg_replace(): Compilation failed: range out of order in character class at offset 11 in <b>/in/q47UH</b> on line <b>9</b><br /> <br /> <b>Warning</b>: preg_replace(): Unknown modifier '[' in <b>/in/q47UH</b> on line <b>18</b><br />
Output for 4.3.0 - 4.3.10
<br /> <b>Warning</b>: Compilation failed: range out of order in character class at offset 11 in <b>/in/q47UH</b> on line <b>9</b><br /> <br /> <b>Warning</b>: Unknown modifier '[' in <b>/in/q47UH</b> on line <b>18</b><br />