如：
$test={"a":1,"b":3,"c":2,"d":1,"e":1};
得到：
$result={"b":3,"c":2,"a":1,"d":1,"e":1};
试过rsort($test),不行。
很像sql语句中的orderby,能否有办法？
回复内容：如：
$test={"a":1,"b":3,"c":2,"d":1,"e":1};
得到：
$result={"b":3,"c":2,"a":1,"d":1,"e":1};
试过rsort($test),不行。
很像sql语句中的orderby,能否有办法？
看看文档
>>> arsort($test)
>>> $test
=> [
"b" => 3,
"c" => 2,
"e" => 1,
"d" => 1,
"a" => 1,
]
function cmp($a, $b)
{
if ($a == $b) {
return 0;
}
return ($a < $b) ? -1 : 1;
}
$a = array(3, 2, 5, 6, 1);
usort($a, "cmp");
foreach ($a as $key => $value) {
echo "$key: $value\n";
}
可以看下这个函数 array_multisort