strcasecmp
    (PHP 3>= 3.0.2, PHP 4 )
strcasecmp -- 
     Binary safe case-insensitive string comparison
    
Description
int 
strcasecmp ( string str1, string str2)
     Returns < 0 if str1 is less than
     str2; > 0 if str1
     is greater than str2, and 0 if they are
     equal.
     
| Example 1. strcasecmp() example | $var1 = "Hello";
$var2 = "hello";
if (!strcasecmp($var1, $var2)) {
    echo '$var1 is equal to $var2 in a case-insensitive string comparison';
} | 
 | 
    
     See also ereg(), strcmp(),
     substr(), stristr(),
     strncasecmp(), and
     strstr().