PHP: Create an array containing a range of elements

Description

array range ( mixed $low , mixed $high [, number $step ] )

Create an array containing a range of elements.

Parameters

low: Low value.
high: High value.
step: If a step value is given, it will be used as the increment between elements in the sequence. step should be given as a positive number. If not specified, step will default to 1.

Return Values

Returns an array of elements from low to high , inclusive. If low > high, the sequence will be from high to low.

ChangeLog

Version Description

5.0.0 The optional step parameter was added.

4.1.0 to 4.3.2 In PHP versions 4.1.0 through 4.3.2, range() sees numeric strings as strings and not integers. Instead, they will be used for character sequences. For example, "4242" is treated as "4".

4.1.0 Prior to PHP 4.1.0, range() only generated incrementing integer arrays. Support for character sequences and decrementing arrays was added in 4.1.0. Character sequence values are limited to a length of one. If a length greater than one is entered, only the first character is used.

Examples

Example #1 range() examples


<?php

// array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

foreach (range(0, 12) as $number) {

    echo $number;

}



// The step parameter was introduced in 5.0.0

// array(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100)

foreach (range(0, 100, 10) as $number) {

    echo $number;

}



// Use of character sequences introduced in 4.1.0

// array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i');

foreach (range('a', 'i') as $letter) {

    echo $letter;

}

// array('c', 'b', 'a');

foreach (range('c', 'a') as $letter) {

    echo $letter;

}

?>

range

Description

Parameters

Return Values

ChangeLog

Examples

See Also