(PHP 5 >= 5.3.0, PECL intl >= 1.0.0)
Collator::compare -- collator_compare — Compare two Unicode strings
Object oriented style
Procedural style
Compare two Unicode strings according to collation rules.
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.
Example #1 collator_compare()example
<?php
$s1 = 'Hello';
$s2 = 'hello';
$coll = collator_create( 'en_US' );
$res = collator_compare( $coll, $s1, $s2 );
if ($res === false) {
echo collator_get_error_message( $coll );
} else if( $res > 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";
?>
上例将输出：