[英]Is there a built-in sortByKey() function in PHP?
Say,$arr contains multiple sub-arrays with the key "pos", 假设$ arr包含多个键为“ pos”的子数组,
$arr = sortByKey($arr,'pos');
After that the sub-array with smallest "pos" value will be ordered first,and so on. 此后,将对“ pos”值最小的子数组进行排序,依此类推。
EDIT 编辑
$sub1 = array('pos' => 2);
$sub2 = array('pos' => 1);
$arr = array($sub1,$sub2);
$arr = sortByKey($arr,'pos');
After this function,$arr will be array($sub2,$sub1) 执行此函数后,$ arr将为array($ sub2,$ sub1)
see the ksort function. 请参阅ksort函数。
here come the manual of the function. 这是功能手册 。
sorry also I think you are ccase you are more looking into uasort you would be able to define a function to compare each of your elements and sort them 抱歉,我想您是ccase,您正在研究uasort,您将能够定义一个函数来比较每个元素并对其进行排序
// Array to be sorted
print_r($array);
// Sort and print the resulting array
uasort($array, create_function('$a,$b', 'return $a[\'pos\'] == $b[\'pos\'] ? 0 : (($a[\'pos\'] < $b[\'pos\']) ? -1 : 1);'));
print_r($array);
have to be tested not sure about the double ? 必须进行测试,不确定该加倍吗? operator ...
操作员...
Cheer 欢呼
Let me write you a function. 让我为您编写一个函数。 Its not tested.
它未经测试。
function subarray_sort($array, $subkey) {
$sortarray=array();
foreach($array as $item) {
$sortarray[]=$item[$subkey];
}
array_multisort($sortarray, $array);
}
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