$ary=array(array("ID"=>13,"name"=>"kitty"),array("ID"=>22,"name"=>"sony"),array("ID"=>17,"name"=>"picker"));
我想对其按照ID升序调整一维数组的顺序,结果为
array(array("ID"=>13,"name"=>"kitty"),array("ID"=>17,"name"=>"picker"),array("ID"=>22,"name"=>"sony"));
应该怎么写?
我想对其按照ID升序调整一维数组的顺序,结果为
array(array("ID"=>13,"name"=>"kitty"),array("ID"=>17,"name"=>"picker"),array("ID"=>22,"name"=>"sony"));
应该怎么写?
<?php
function sortByOneKey(array $array, $key, $asc = true) {
$result = array();
$values = array();
foreach ($array as $id => $value) {
$values[$id] = isset($value[$key]) ? $value[$key] : '';
}
if ($asc) {
asort($values);
}
else {
arsort($values);
}
foreach ($values as $key => $value) {
$result[$key] = $array[$key];
}
return $result;
}?>Consider the following example:<?php$users = array(
1 => array('name' => 'John', 'age' => 35),
2 => array('name' => 'Alice', 'age' => 23),
3 => array('name' => 'Bob', 'age' => 26)
);
$sortedByNameAsc = sortByOneKey($users, 'name');
$sortedByNameDesc = sortByOneKey($users, 'name', false);
echo "Sorted by Name in ascending order: ";
echo "<pre>" . print_r($sortedByNameAsc, true) . "</pre>";
echo "<br /><br />Sorted by Name in descending order: ";
echo "<pre>" . print_r($sortedByNameDesc, true) . "</pre>";?>The output will be the following: Sorted by Name in ascending order:
Array
(
[2] => Array
(
[name] => Alice
[age] => 23
) [3] => Array
(
[name] => Bob
[age] => 26
) [1] => Array
(
[name] => John
[age] => 35
))Sorted by Name in descending order:
Array
(
[1] => Array
(
[name] => John
[age] => 35
) [3] => Array
(
[name] => Bob
[age] => 26
) [2] => Array
(
[name] => Alice
[age] => 23
))
$users = array(
array("ID"=>13,"name"=>"kitty"),
array("ID"=>22,"name"=>"sony"),
array("ID"=>17,"name"=>"picker")
);
$sortedByNameAsc = sortByOneKey($users, 'ID');
$sortedByNameDesc = sortByOneKey($users, 'ID', false);