Collator::compare

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0)

Compare two Unicode strings

public int Collator::compare ( string $str1, string $str2 )

Object oriented style

Procedural style

int collator_compare ( Collator $coll , string $str1 , string $str2 )

Compare two Unicode strings according to collation rules.

Parameters:

coll

Collator object.

str1

The first string to compare.

str2

The second string to compare.

Returns:

Return comparison result:

1 if str1 is greater than str2 ;
0 if str1 is equal to str2;
-1 if str1 is less than str2 .

boolean FALSE

Warning

This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.

Examples:

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";
}
?>

The above example will output:

s1 is greater than s2