Question

我试图将输出数组设置为具有更新（排序）输出的新数组。这样做的目的是获取要排序的新变量：[0,1,2,3,4]因为它现在按键排序，因此实际数组的顺序已经移位，所以它更像是： [3,1,4,2]。代码如下：

//Retrieve what is scored from the game
$name = $_GET["name"];
$score = $_GET["score"];

//Read a text file into an array, with each line in a new element 
$filename = "score.txt"; 
$lines = array(); 
$file = fopen($filename, "r"); 
while(!feof($file)) {
    //read file line by line into a new array element 
    $lines[] = explode("|",fgets($file));
} 
fclose ($file);

//Append $name and $score into $lines
$lines[] = array($score,$name);

//Sort it from high to low
arsort($lines);

//Removes the 11th Highscore - As it is base 0, the 11th term is the 10th array
//unset($lines[10]);

//Remove the \n from the names - rtrim
for ($x = 0; $x <= 10; $x++) {
    $lines[$x][1] = rtrim($lines[$x][1]);
    $lines[$x][0] = intval($lines[$x][0]);
} 

//print_r($lines);
echo json_encode($lines);

score.txt包含以下内容：

目前输出如下（包括添加的$ name和$ score）：

{"10":[55,"Ball"],"1":[50,"Matt"],"2":[45,"Sam"],"4":[40,"Bob"],"0":[35,"Nathan"],"5":[30,"Roman"],"6":[25,"Zac"],"3":[20,"Jono"],"7":[15,"Larry"],"8":[10,"Thomas"],"9":[5,"Josh"]}

正如你所看到的，它按照得分排序：55,50,45，阵列只是重新排序：10,1,2。

如何获得相同的输出，但现在输出为：

{"0":[55,"Ball"],"1":[50,"Matt"],"2":[45,"Sam"],"3":[40,"Bob"],"4":[35,"Nathan"],"5":[30,"Roman"],"6":[25,"Zac"],"7":[20,"Jono"],"8":[15,"Larry"],"9":[10,"Thomas"],"10":[5,"Josh"]}

输出现在是：0,1,2,3 ..从最高分中排序：55,50,45 ...

提前致谢。

Answer 1

arsort()会颠倒顺序并保持索引键关联，我认为你要找的是rsort()它将反向排序数组并重置索引键关联

更改代码中的以下位以使用rsort()

//Sort it from high to low
rsort($lines);

Answer 2

Before 'json_encode($lines)' code, Put below code:-
$lines_temp = array();
foreach($lines as $k=>$v){
$lines_temp[] = $lines[$k];
}
$lines = $lines_temp;
echo json_encode($lines);

PHP - 如何将更改的变量设置为新数组

2 个答案: