Collator::compare collator_compare Compare two Unicode strings &reftitle.description; &style.oop; int Collator::compare stringstr1 stringstr2 &style.procedural; int collator_compare Collatorcoll stringstr1 stringstr2 Compare two Unicode strings according to collation rules. &reftitle.parameters; coll Collator object. str1 The first string to compare. str2 The second string to compare. &reftitle.returnvalues; Return comparison result: 1 if str1 is greater than str2 ; 0 if str1 is equal to str2; -1 if str1 is less than str2 . On error boolean &false; is returned. &return.falseproblem; &reftitle.examples; 0 ) { echo "s1 is greater than s2\n"; } else if( $res < 0 ) { echo "s1 is less than s2\n"; } else { echo "s1 is equal to s2\n"; } ?> ]]> &example.outputs; s1 is greater than s2 &reftitle.seealso; collator_sort