PHP range() Function: Creating Arrays with Specified Elements

The PHP range() function creates an array containing a sequence of elements defined by a start value, an end value, and an optional step.

Parameters: start – the first value of the sequence. end – the value at which the sequence stops (inclusive). step – optional increment between elements; must be positive, defaults to 1.

Return value: an array of values from start to end, inclusive.

Examples:

<?php
// Numeric range from 0 to 12
foreach (range(0, 12) as $number) {
    echo $number;
}

// Range with step of 10 from 0 to 100
foreach (range(0, 100, 10) as $number) {
    echo $number;
}

// Character range from 'a' to 'i'
foreach (range('a', 'i') as $letter) {
    echo $letter;
}

// Reverse character range from 'c' to 'a'
foreach (range('c', 'a') as $letter) {
    echo $letter;
}
?>