Question

我想在php中重新索引键和值的数组例如，如果删除数据：“ 2”，则数据3将被重新索引为2，而array 3 {sequence : 3 "ssdummy tossssdo 3"}内部的值将被更改为{sequence : 2 "ssdummy tossssdo 3"}

{
"sequence": 2,
"data": {
"1": {"sequence": "1", "todo": "dummy todo"},
"2": {"sequence": "2", "todo": "dummy todo 2"},
"3": {"sequence": "3", "todo": "ssdummy tossssdo 3"},}
}

Answer 1

首先，您可以将值转换为数组，因为输入是json。然后解析该数组，以删除所需的值。解析数组后，可以将其转换回json（如果需要）。下一个脚本将删除$valueToRemove变量中指示的值。

<?php
$jsonValues = '{
"sequence": 2,
"data": {
    "1": {"sequence": "1", "todo": "dummy todo"},
    "2": {"sequence": "2", "todo": "dummy todo 2"},
    "3": {"sequence": "3", "todo": "ssdummy tossssdo 3"}
    }
}';
$valueToRemove = 2;
$arrayValues = json_decode($jsonValues, true);
$oldData = $arrayValues['data'];
$newData = array();
$counter = 0;
foreach ($oldData as $oldIndex => $oldValue) {
    if ($valueToRemove != $oldIndex) {
        $counter++;
        $newData[$counter] = array(
                'sequence' => $counter,
                'todo' => $oldValue['todo']
        );
    }
}
$arrayValues['data'] = $newData;
$jsonValues = json_encode($arrayValues);
var_dump($jsonValues);
?>

我从脚本中得到以下输出：

{"sequence":2,"data":{"1":{"sequence":1,"todo":"dummy todo"},"2":{"sequence":2,"todo":"ssdummy tossssdo 3"}}}

重新索引数组值

1 个答案: