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<!DOCTYPE html><html><body>​<?phpecho substr_compare("Hello world!","Hello world!",0)."<br>"; // the two strings are equalecho substr_compare("Hello world!","Hello",0)."<br>"; // string1 is greater than string2echo substr_compare("Hello world!","Hello world! Hello!",0)."<br>"; // string1 is less than string2?> </body></html>​