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run code in 150+ php & hhvm versions
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<?php $c = '€'; echo bin2hex($c) . "\n"; echo bin2hex(iconv('UTF-8', 'CP850//TRANSLIT', $c)) . "\n";
Output for 5.0.0 - 5.5.34, 5.6.7 - 5.6.20, 5.6.28, hhvm-3.12.0, 7.0.0 - 7.0.5, 7.0.14 - 7.1.0
e282ac 455552
Output for 7.0.6
e282ac Fatal error: Uncaught Error: Call to undefined function iconv() in /in/fJPnp:4 Stack trace: #0 {main} thrown in /in/fJPnp on line 4
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.5.35, 5.6.21
e282ac Fatal error: Call to undefined function iconv() in /in/fJPnp on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
e282ac Fatal error: Call to undefined function: iconv() in /in/fJPnp on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
e282ac Fatal error: Call to undefined function: iconv() in /in/fJPnp on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
e282ac Fatal error: Call to undefined function: iconv() in /in/fJPnp on line 4