硕夏网html在线编辑器

<?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>"; ?>