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<!DOCTYPE html> <html> <body> <?php echo substr_compare("world","or",1,2)."<br>"; echo substr_compare("world","ld",-2,2)."<br>"; echo substr_compare("world","orl",1,2)."<br>"; echo substr_compare("world","OR",1,2,TRUE)."<br>"; echo substr_compare("world","or",1,3)."<br>"; echo substr_compare("world","rl",1,2)."<br>"; ?> </body> </html>