Php 对数组排序并保留键的值
我有一个如下所示的数组:Php 对数组排序并保留键的值,php,arrays,sorting,Php,Arrays,Sorting,我有一个如下所示的数组: Array ( [team1] => Array ( [points] => 10 [players] => Array ( ... ) ) [team2] => Array ( [points] =>
Array
(
[team1] => Array
(
[points] => 10
[players] => Array
(
...
)
)
[team2] => Array
(
[points] => 23
[players] => Array
(
...
)
)
... many more teams
)
我想根据每支球队的得分对球队进行排序。我试过这个:
function sort_by_points($a,$b)
{
if ($a['points']==$b['points']) return 0;
return ($a['points']<$b['points'])?1:-1;
}
usort($this->wordswithdata, "sortbycount");
有没有办法在不将团队名称作为数组键覆盖的情况下对数组进行排序?试试这段代码,希望它能起作用
function aasort (&$array, $key) {
$sorter=array();
$ret=array();
reset($array);
foreach ($array as $ii => $va) {
$sorter[$ii]=$va[$key];
}
asort($sorter);
foreach ($sorter as $ii => $va) {
$ret[$ii]=$array[$ii];
}
$array=$ret;
}
aasort($your_array,"points");
使用函数,该函数应保持键=>值关联完整
(旁注:您可以使用返回$a['points']-$b['points']
代替ifs)您可以使用:
此函数使用用户定义的比较函数对数组进行排序,使数组索引与关联的数组元素保持相关性
U可以按其值对关联数组进行如下排序
$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");
function Ascending($a, $b) {
if ($a == $b) {
return 0;
}
return ($a < $b) ? -1 : 1;
}
function Descending($a, $b) {
if ($a == $b) {
return 0;
}
return ($a > $b) ? -1 : 1;
}
echo "Ascending order" ;
uasort($age,"Ascending");
print_r($age);
echo "</br>Descending order" ;
uasort($age,"Descending");
print_r($age);
$age=array(“彼得”=>“35”、“本”=>“37”、“乔”=>“43”);
函数升序($a,$b){
如果($a==$b){
返回0;
}
回报率($a<$b)?-1:1;
}
函数降序($a,$b){
如果($a==$b){
返回0;
}
回报($a>$b)?-1:1;
}
呼应“升序”;
uasort($age,“升序”);
印刷(年龄);
回显“降序”;
uasort($年龄,“下降”);
印刷(年龄);
感谢您提供此代码片段,它可能会提供一些有限的即时帮助。通过展示为什么这是一个很好的问题解决方案,A将极大地提高它的长期价值,并将使它对未来有其他类似问题的读者更有用。请在您的回答中添加一些解释,包括您所做的假设。
uasort($array, function($a, $b) {
return $a['points'] - $b['points'];
});
$age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43");
function Ascending($a, $b) {
if ($a == $b) {
return 0;
}
return ($a < $b) ? -1 : 1;
}
function Descending($a, $b) {
if ($a == $b) {
return 0;
}
return ($a > $b) ? -1 : 1;
}
echo "Ascending order" ;
uasort($age,"Ascending");
print_r($age);
echo "</br>Descending order" ;
uasort($age,"Descending");
print_r($age);
its working fine i giving example
that array need sort
$sumarray=array [▼
484 => 54.7875
486 => 53.5375
487 => 52.9125
488 => 52.2875
493 => 54.7875
]
$original=$sumarray;
$svalue=array_values($sumarray);
rsort($svalue);
$sorted=array();
foreach ($svalue as $key => $value) {
$kk=array_search($value,$sumarray);
$sorted[$kk]=$value;
unset($sumarray[$kk]);
}
print_r($original);
print_r($svalue);
print_r($sorted);
//out put
array:5 [▼
484 => 54.7875
486 => 53.5375
487 => 52.9125
488 => 52.2875
493 => 54.7875
]
array:5 [▼
0 => 54.7875
1 => 54.7875
2 => 53.5375
3 => 52.9125
4 => 52.2875
]
array:5 [▼
484 => 54.7875
493 => 54.7875
486 => 53.5375
487 => 52.9125
488 => 52.2875
]