strncasecmp(3) [php man page]

STRNCASECMP(3)								 1							    STRNCASECMP(3)

strncasecmp - Binary safe case-insensitive string comparison of the first n characters

SYNOPSIS

       int strncasecmp (string	$str1, string  $str2, int  $len)

DESCRIPTION

	This  function	is  similar  to strcasecmp(3), with the difference that you can specify the (upper limit of the) number of characters from
       each string to be used in the comparison.

PARAMETERS

	      o $str1
		- The first string.

	      o $str2
		- The second string.

	      o $len
		- The length of strings to be used in the comparison.

RETURN VALUES

	Returns < 0 if $str1 is less than $str2; > 0 if $str1 is greater than $str2, and 0 if they are equal.

SEE ALSO

       strncmp(3), preg_match(3), substr_compare(3), strcasecmp(3), stristr(3), substr(3).

PHP Documentation Group 													    STRNCASECMP(3)

COLLATOR_COMPARE(3)							 1						       COLLATOR_COMPARE(3)

Collator::compare - Compare two Unicode strings

	Object oriented style

SYNOPSIS

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

DESCRIPTION

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

	Compare two Unicode strings according to collation rules.

PARAMETERS

	      o $coll
		-Collator object.

	      o $str1
		- The first string to compare.

	      o $str2
		- The second string to compare.

RETURN VALUES

       Return comparison result:

	      o 1 if $str1 is
		greater than $str2 ;

	      o 0 if $str1 is
		equal to $str2;

	      o -1 if $str1 is
		less than $str2 .

	On error boolean 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(3)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
";
	      } else if( $res < 0 ) {
		  echo "s1 is less than s2
";
	      } else {
		  echo "s1 is equal to s2
";
	      }
	      ?>

	      The above example will output:

SEE ALSO

       collator_sort(3).

PHP Documentation Group 												       COLLATOR_COMPARE(3)