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? ??? ?? PHP ???? eval() ?? ??? ?? ???? ???? ?? ?? ?? ????? ??? ??????

eval() ?? ??? ?? ???? ???? ?? ?? ?? ????? ??? ??????

Oct 26, 2024 am 03:00 AM

How to Access Nested Array Values Using String Path Expressions Without eval()?

??? ?? ???? ???? ?? ? ??

???????? ??? ??? ???? ??? ?? ?? ????? ?? ??? ????. ??? ?? ?? ??? ??? ???.

Array
(
    [0] => Array
        (
            [Data] => Array
                (
                    [id] => 1
                    [title] => Manager
                    [name] => John Smith
                )
         )
    [1] => Array
        (
            [Data] => Array
                 (
                     [id] => 1
                     [title] => Clerk
                     [name] =>
                         (
                             [first] => Jane
                             [last] => Smith
                         )
                 )

        )

)

? ??? ???? ?? ??? ??? ???? ???? ???? ?? ?? ???? ??? ???? ????. ??? ?? ????? ??? eval() ??? ??? ?? ? ????.

???

? ??? ???? ??? ??? ?? ???? ?? ?? ?? ???? ????. ??Explode() ??? ???? ??? ? ????.

<code class="php">$pathStr = "0:Data:name";
$paths = explode(":", $pathStr); </code>

??? ?? ???? ??? ???? ??? ????? ??? ? ????.

<code class="php">$itens = $myArray;
foreach($paths as $ndx){
    $itens = $itens[$ndx];
}</code>

? ???? $itens ?? "John Smith" ?? ?????.

??? ? ??? ???? ??? ??? ????.

<code class="php">function getArrayValueByPath($pathStr, $arrayToAccess)
{
    $paths = explode(":", $pathStr); 
    $itens = $arrayToAccess;
    foreach($paths as $ndx){
        $itens = $itens[$ndx];
    }
    return $itens;
}</code>

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