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range (PHP 3 >= 3.0.8, PHP 4, PHP 5) range --
Create an array containing a range of elements
Descriptionarray range ( mixed low, mixed high [, number step] )
range() returns an array of elements from
low to high,
inclusive. If low > high, the sequence will be from high to low.
New parameter:
The optional step parameter was added in 5.0.0.
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.
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;
}
?>
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Note:
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.
| Caution |
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".
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See also shuffle(),
array_fill(), and
foreach.
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