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<?php // https://en.wikipedia.org/wiki/Dotted_and_dotless_I //var_dump(mb_strtolower('I')); // should be "ı" //var_dump(mb_strtolower('İ')); // should be "i" $coll1 = collator_create( 'de' ); var_dump(collator_compare($coll1,'I','İ')); $coll2 = collator_create( 'de' ); var_dump(collator_compare($coll2,'ß','ss')); $coll3 = collator_create( 'de' ); var_dump(collator_compare($coll3,mb_strtolower('ß'),mb_strtolower('SS')));
Output for git.master, git.master_jit, rfc.property-hooks
int(-1) int(1) int(1)

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