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run code in 200+ php & hhvm versions
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<?php var_dump(iconv('ISO-8859-1', 'UTF-8//IGNORE', 'åäö'));
based on auM7m
Output for 5.4.0 - 5.5.34, 5.6.28, 7.0.20 - 7.2.0
string(12) "åäö"
Output for 7.0.0 - 7.0.11
Fatal error: Uncaught Error: Call to undefined function iconv() in /in/iXhKn:3 Stack trace: #0 {main} thrown in /in/iXhKn on line 3
Process exited with code 255.
Output for 5.5.35 - 5.6.26
Fatal error: Call to undefined function iconv() in /in/iXhKn on line 3
Process exited with code 255.