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run code in 300+ PHP versions simultaneously
<?php $some_string = "ннннн ннннн"; $arra_c = array( '1' ); foreach($arra_c as $k => $v){ var_dump(iconv("UTF-8", "ISO-8859-1//TRANSLIT", $text)); } var_dump(mb_detect_encoding($some_string)); var_dump(strlen(json_encode(array('message' => $some_string))));

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