PHP Manual
Collator
Compare two Unicode strings

Collator::compare

collator_compare

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

Collator::compare -- collator_compare — Compare two Unicode strings

Description

Object oriented style

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

Procedural style

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

Compare two Unicode strings according to collation rules.

Parameters

coll: Collator object.
str1: The first string to compare.
str2: The second string to compare.

Return Values

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 bool FALSE is returned.

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

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";}?>

The above example will output:

s1 is greater than s2

Php/docs/collator.compare

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