Source Code : strcmp() function performs a case-sensitive comparison of two strings.

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strcmp() function performs a case-sensitive comparison of two strings.

 
Its syntax follows: int strcmp (string string1, string string2)

strcmp() returns one of three possible values:

0 if string1 and string2 are equal
< 0 if string1 is less than string2
> 0 if string2 is less than string1

<?
$string1 = "butter";
$string2 = "butter";

if ((strcmp($string1, $string2)) == 0) :
     print "Strings are equivalent!";
endif;
?>
  
  

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