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<!DOCTYPE html> <html> <body> <?php // Positive numbers: echo substr("Hello world",0,10)."<br>"; echo substr("Hello world",1,8)."<br>"; echo substr("Hello world",0,5)."<br>"; echo substr("Hello world",6,6)."<br>"; echo "<br>"; // Negative numbers: echo substr("Hello world",0,-1)."<br>"; echo substr("Hello world",-10,-2)."<br>"; echo substr("Hello world",0,-6)."<br>"; ?> </body> </html>
Hello worl
ello wor
Hello
world
Hello worl
ello wor
Hello