(PHP 4 >= 4.0.5, PHP 5, PHP 7)
strcoll — Locale based string comparison
$str1
   , string $str2
   ) : intNote that this comparison is case sensitive, and unlike strcmp() this function is not binary safe.
strcoll() uses the current locale for doing the comparisons. If the current locale is C or POSIX, this function is equivalent to strcmp().
str1The first string.
str2The second string.
   Returns < 0 if str1 is less than
   str2; > 0 if
   str1 is greater than
   str2, and 0 if they are equal.