Online PHP editor | output for 8A33E

<?php foreach (['C', 'tr_TR.UTF-8'] as $locale) { if (setlocale(LC_CTYPE, $locale) === false) { throw new RuntimeException("Locale unavailable: $locale"); } $values = ['I', 'h']; sort($values, SORT_STRING | SORT_FLAG_CASE); $keys = ['I' => 0, 'h' => 0]; ksort($keys, SORT_STRING | SORT_FLAG_CASE); echo $locale, "\n"; echo ' stripos: ', var_export(stripos('I', 'i'), true), "\n"; echo ' strncasecmp: ', strncasecmp('I', 'i', 1), "\n"; echo ' substr_compare: ', substr_compare('I', 'i', 0, 1, true), "\n"; echo ' sort: ', implode(',', $values), "\n"; echo ' ksort: ', implode(',', array_keys($keys)), "\n"; }