Question

我有这样的功能：

foreach($data as $line) {
    if(substr($line,0,1) == "A") {
        if(!$first) {
            $parts = explode(chr(9),$line);

            //echo "<pre>"; print_r($parts); echo "</pre>";

打印时返回多个这样的数组：

Array
(
    [0] => A
    [1] => 100_1
    [2] => 0
    [3] => 1188
    [4] => 0
)

Array
(
    [0] => A
    [1] => 100_2
    [2] => 0
    [3] => 1188
    [4] => 0
)

Array
(
    [0] => A
    [1] => 100_3
    [2] => 0
    [3] => 1186
    [4] => 0
)

Array
(
    [0] => A
    [1] => 101_2
    [2] => 0
    [3] => 1188
    [4] => 0
)

Array
(
    [0] => A
    [1] => 302
    [2] => 0
    [3] => 1161
    [4] => 0
)

是否有可能只有＆＃39;选择值为_1,2,3的键（[1]），（如果存在）并用相同的值替换键（[2]），结果将是：

Array
(
    [0] => A
    [1] => 100_1
    [2] => 1
    [3] => 1187
    [4] => 0
)

Array
(
    [0] => A
    [1] => 100_2
    [2] => 2
    [3] => 1188
    [4] => 0
)

Array
(
    [0] => A
    [1] => 100_3
    [2] => 3
    [3] => 1186
    [4] => 0
)

Array
(
    [0] => A
    [1] => 101_2
    [2] => 2
    [3] => 1188
    [4] => 0
)

Array
(
    [0] => A
    [1] => 302
    [2] => 0
    [3] => 1161
    [4] => 0
)

我试图制作这样的大量条目，但它们不起作用（我无法获得正确的密钥）：

foreach($parts as $key => $value) {

    if ($value == '100_1') {$parts[$key] = '1';};
    if ($value == '100_2') {$parts[$key] = '2';};
    if ($value == '100_3') {$parts[$key] = '3';}}

但这将是纯粹的疯狂，因为有超过50种不同的值和数组，任何帮助都会受到极大的欢迎。

Answer 1

类似的东西：

foreach($data as $line) {
    if(substr($line,0,1)=="A") {
        if(!$first) {
            $parts = explode(chr(9), $line);
            list($num1, $num2) = explode('_', $parts[1]);
            $parts[2] = isset($num2) ? $num2 : $parts[2];
        }
    }
}

根据另一个关键值更改键值

1 个答案: