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x
 
<!DOCTYPE html>
<html>
<body>
<?php  
for ($x = 0; $x <= 100; $x+=10) {
  echo "The number is: $x <br>";
}
?>  
</body>
</html>
The number is: 0
The number is: 10
The number is: 20
The number is: 30
The number is: 40
The number is: 50
The number is: 60
The number is: 70
The number is: 80
The number is: 90
The number is: 100