Question

有没有更好的方法来做这样的事情？这很好，但我认为可能有一条捷径可以获得相同的结果。我想要轻松添加更多数组我可以把它变成一个函数并在它之外使用for循环但仍然。

只是想知道。

<?
$array1 = array("test1","test2","test3","test4");
$array2 = array("dest1","test2","dest3","dest4");




    for ($i=0; $i<count($array1); $i++) { //FOR STATEMENT TO GET MULTIPLE ARRAYS REGISTERED AS A FOREACH-STYLE 
    $val1 = $array1[$i]; //VALUES GET
    $val2 = $array2[$i];

    $array1 = array_flip($array1); //ARRAY IS FLIPPED FROM KEY => VALUE TO VALUE => KEY SO THAT THE KEYS CAN BE GET. REMEMBER TO SWITCH IT BACK.
    $array2 = array_flip($array2);

    $key1 = $array1[$val1]; //NOW MUST ITERATE THROUGH USING VALUES ABOVE BECAUSE THE KEYS ARE NO LONGER NUMBERS.
    $key2 = $array2[$val2];

    $array1 = array_flip($array1); //SWITCHING IT BACK.
    $array2 = array_flip($array2);

    echo $key1 . "=>" . $val1 . "<br />";
    echo $key2 . "=>" . $val2 . "<br />";

    }




    var_dump($array1);

    ?>

Answer 1

您已拥有数组的“密钥”$i。

for ($i=0; $i<count($array1); $i++) {
    $val1 = $array1[$i]; // You're getting the value from the array,
    $val2 = $array2[$i]; // you already have the key, $i

    echo $i . "=>" . $val1 . "<br />";
    echo $i . "=>" . $val2 . "<br />";
}

编辑：如果两个数组具有相同的键，则可以foreach超过一个，并从另一个获取值。

foreach($array1 as $key=>$val1){
    $val2 = $array2[$key];

    echo $key . "=>" . $val1 . "<br />";
    echo $key . "=>" . $val2 . "<br />";
}

Answer 2

我能做的最好的事情

$arrayList = Array($array1, $array2); // Add every array here
$keyArr = Array();
foreach ($arrayList as $key => $value)
{
   // Put the keys of every array in $arrayList in an other array
   $keyArr[$key] = array_keys($value);
}
// Loop while $i is lower than the highest index of the bigest array in $arrayList
for ($i = 0; $i < count(max($arrayList )); $i++)
{
   // Loop every array in $arrayList
   foreach ($arrayList as $arrKey => $arr)
   {
     // If the array in $arrayList has at least $i element
     if ($i < count($arr))
     {

       // Get the key of the $i-n element in the array (take it from the $keyArr defined above)
       $key = $keyArr[$arrKey][$i];
       // Get the value of the $i-n element in the array
       $val = $arr[$key];
     }
   }
}

使用for和array_flip来模拟多个foreach。有没有更好的办法？

2 个答案: