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<?php
//define range limits
$x = 10;
$y = 36;

//generate range as array
//result: (10, 11, 12...35, 36)
$range = range($x, $y);
print_r($range);
?>

The range( ) function accepts two arguments. There are a lower limit and an upper limit. Beside that, it returns an array containing all the integers between those limits and you can also create a number range that steps over particular number by passing the step value to the function as a third, optional argument.

<?php
//define range limits
$x = 10;
$y = 30;

//generate range as array
//contains every third number
//result: (10, 13, 16, 19, 22, 25, 28)
$range = range($x, $y, 3);
print_r($range);
?>

A simple application of range( ) function is to print a multiplication table. Beneath, you can see a list illustrates how to do print a multiplication table, by generating all numbers between 1 and 10, then using the list to print a multiplication table for the number 5:

<?php
//print multiplication table
foreach (range(1, 10) as $num) {
  echo "5 x $num = " . (5 * $num) . "\n";
}
?>