<?php

ini_set("intl.error_level", E_WARNING);
$tr = Transliterator::create("Katakana-Latin");
$orstr = "オーシャンビュー";
$new_str = $tr->transliterate($orstr);
$revtr = $tr->createInverse();
$recovstr = $revtr->transliterate($new_str);
$revtr2 = transliterator_create_inverse($tr);
$recovstr2 = $revtr2->transliterate($new_str);
echo $orstr, "\n";
echo $new_str, "\n";
echo $recovstr, "\n";
var_dump(($orstr == $recovstr) == $recovstr2);
echo "Done.\n";
<?php

ini_set("intl.error_level", E_WARNING);
$tr = Transliterator::create("Katakana-Latin");
$tr->createInverse(array());
$tr = Transliterator::create("Katakana-Latin");
transliterator_create_inverse("jj");