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run code in 150+ php & hhvm versions
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<?php $result = "\xC2\xA0truc\xC2"; echo @iconv("UTF-8", "UTF-8//IGNORE", $result); ini_set('mbstring.substitute_character', "none"); echo mb_convert_encoding($result, 'UTF-8', 'UTF-8');
Output for 5.4.0 - 5.5.34, 5.6.0 - 5.6.20, 5.6.28 - 7.0.5, 7.0.14 - 7.1.0
 truc
Output for 7.0.6 - 7.0.10
Fatal error: Uncaught Error: Call to undefined function iconv() in /in/RGSS9:3 Stack trace: #0 {main} thrown in /in/RGSS9 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.9, 5.5.35 - 5.5.38, 5.6.21 - 5.6.25

Process exited with code 255.
Output for 5.0.0 - 5.3.29
 truc truc
Output for 4.3.0 - 4.3.1