strcmp(3) [php man page]

STRCMP(3)								 1								 STRCMP(3)

strcmp - Binary safe string comparison

SYNOPSIS

       int strcmp (string  $str1, string  $str2)

DESCRIPTION

	Note that this comparison is case sensitive.

PARAMETERS

	      o $str1
		- The first string.

	      o $str2
		- The second string.

RETURN VALUES

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

EXAMPLES

       Example #1

	      strcmp(3) example

	      <?php
	      $var1 = "Hello";
	      $var2 = "hello";
	      if (strcmp($var1, $var2) !== 0) {
		  echo '$var1 is not equal to $var2 in a case sensitive string comparison';
	      }
	      ?>

SEE ALSO

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

PHP Documentation Group 														 STRCMP(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)