␡
- Accessing All Elements of Numeric Arrays
- Accessing All Elements of Associative Arrays
- Accessing All Array Elements in Nested Arrays
- Turning an Array into Variables
- Converting Strings to Arrays
- Converting Arrays to Strings
- Sorting Arrays Alphabetically
- Sorting Associative Arrays Alphabetically
- Sorting Nested Arrays
- Sorting Nested Associative Arrays
- Sorting IP Addresses (as a Human Would)
- Sorting Anything
- Sorting with Foreign Languages
- Applying an Effect to All Array Elements
- Filtering Arrays
- Getting Random Elements Out of Arrays
- Making Objects Behave Like Arrays
This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
Sorting Arrays Alphabetically
sort($a, SORT_NUMERIC); sort($a, SORT_STRING);
<pre>
<?php
$a = array('4', 31, '222', 1345);
sort($a, SORT_NUMERIC);
print_r($a);
sort($a, SORT_STRING);
print_r($a);
?>
</pre>
Sorting an Array (sort.php)
Numeric arrays can be sorted rather easily by using sort(). However, a problem exists if the array contains both numeric and string values (for instance, "2" > "10" but 2 < 10). Therefore, the sorting can be tweaked so that a special data type is used for comparing elements when sorting:
- SORT_NUMERIC sorts elements as numbers.
- SORT_REGULAR sorts elements according to their data type (standard behavior).
- SORT_STRING sorts elements as strings.
Here is the output of the preceding listing:
Array
(
[0] => 4
[1] => 31
[2] => 222
[3] => 1345
)
Array
(
[0] => 1345
[1] => 222
[2] => 31
[3] => 4
)