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run code in 150+ php & hhvm versions
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<?php $re = iconv("utf-8", "cp1251", "/-[а-я]+=/"); $str = iconv("utf-8", "cp1251", "-превед="); var_dump($re, $str, preg_match($re, $str));
based on jVHB2
Output for 5.0.0 - 5.5.34, 5.6.8 - 5.6.20, 5.6.28 - 7.0.5, 7.0.14 - 7.1.0
string(10) "/-[�-�]+=/" string(8) "-������=" int(1)
Output for 7.0.6
Fatal error: Uncaught Error: Call to undefined function iconv() in /in/hJhnX:2 Stack trace: #0 {main} thrown in /in/hJhnX on line 2
Process exited with code 255.
Output for 5.5.35, 5.6.21
Fatal error: Call to undefined function iconv() in /in/hJhnX on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: iconv() in /in/hJhnX on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: iconv() in /in/hJhnX on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: iconv() in /in/hJhnX on line 2