PHParadise | category array handling | copy source code of array multi sort

PHParadise > array handling > array multi sort

sort multidimensional arrays by field specified.
specify the key by which you want your multiarray sorted.

copy the code of array handling / array multi sort

<?php

/*------------------------------------------------------------------------------
|
|                             PHParadise source code
|
|-------------------------------------------------------------------------------
|
| file:             array multi sort
| category:         array handling
|
| last modified:    Thu, 04 Aug 2005 23:56:48 GMT
| downloaded:       Fri, 25 May 2012 02:39:11 GMT as copy from textarea
|
| code URL:
| http://phparadise.de/php-code/array-handling/array-multi-sort/
|
| description:
| sort multidimensional arrays by field specified. specify the key by which you
| want your multiarray sorted.
|
------------------------------------------------------------------------------*/

// demo array to sort
$array_to_sort = array(
					array('Paul','Allan','25','user'),
					array('Fred','Kruger','13','moderator'),
					array('Anna','Sweet','58','user'),
					array('John','Doe','69','user'),
					array('Cindy','Heller','29','moderator'),
				);

// specify the default field to sort
$sort_field = 1;

// compare function
function cmpi($a, $b)
{
	global $sort_field;
	return strcmp($a[$sort_field], $b[$sort_field]);
}

// display sorting options
$sort_num = count($array_to_sort[0]);
$array_num = count($array_to_sort);

if(isset($_GET['sort']) 
	&& is_numeric($_GET['sort']) 
	&& in_array($_GET['sort'],range(0,$sort_num)))
{
	$sort_field = $_GET['sort'];
}
echo '
<ul style="list-style: none; padding: 0.5em;">';
for($i = 0; $i < $sort_num; $i++)
{
	echo ($i != $sort_field ? '
	<li><a href="./?sort='.$i.'">sort by '.($i+1).'. field</a></li>' : '
	<li><strong>currently sorted by '.($i+1).'. field</strong></li>');
}
echo '
</ul>';

// do the array sorting
usort($array_to_sort, 'cmpi');

// demo output
echo '
<table style="width: 30em; 
	border: 0.1em solid #eee; 
	border-collapse: collapse; 
	margin: 1em 0;
	padding: 0.2em;">';
for($i = 0; $i < $array_num; $i++)
{
	echo '
	<tr>';
	for($x = 0; $x < $sort_num; $x++)
	{
		echo '
		<td>'.$array_to_sort[$i][$x].'</td>';
	}
	echo '
	</tr>';
}
echo '
</table>';

PHParadise source code of “array multi sort” in category “array handling”

PHParadise > array handling > array multi sort

copy the code of array handling / array multi sort