The collator_compare() function is an inbuilt function in PHP which is used to compare two Unicode strings according to collation rules.
Syntax:
- Procedural style:
int collator_compare( $coll, $str1, $str2 )
- Object oriented style:
int Collator::compare( $str1, $str2 )
Parameters: This function accepts three parameter as mentioned above and described below:
- $coll: This parameter is used as collator object. It provides the comparison capability with support for appropriate locale-sensitive sort orderings.
- $str1: The first string to compare.
- $str2: The second string to compare.
Return Value: This function returns the comparison result which are given below:
- 1: If str1 is greater than str2.
- 0: If str1 is equal to str2.
- -1: If str1 is less than str2.
- Error: It return False.
Below programs illustrate the collator_compare() function in PHP:
Program 1:
<?php   // Declare variable and initialize it $str1 = 'Geeks'; $str2 = 'neveropen';   $coll = collator_create( 'en_US' );   // Compare both strings $res = collator_compare( $coll, $str1, $str2 );   if ($res === false)     echo collator_get_error_message( $coll ); else if( $res > 0 )     echo $str1 . " is greater than " . $str2 . "\n"; else if( $res < 0 )     echo $str1 . " is less than " . $str2 . "\n"; else    echo $str1 . " is equal to " . $str2; ?> |
Output:
Geeks is greater than neveropen
Program 2:
<?php   // Declare the variable and initialize it $str1 = 'neveropen'; $str2 = 'neveropen';   $coll = collator_create( 'en_US' );   // Compare both strings $res = collator_compare( $coll, $str1, $str2 );   if ($res === false)     echo collator_get_error_message( $coll ); else if( $res > 0 )     echo $str1 . " is greater than " . $str2 . "\n"; else if( $res < 0 )     echo $str1 . " is less than " . $str2 . "\n"; else    echo $str1 . " is equal to " . $str2; ?> |
Output:
neveropen is equal to neveropen
Reference: http://php.net/manual/en/collator.compare.php
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