Kак взять тот id где "email": «[e-mail]»?

Question

[Kar92]

как взять тот id где "email" : "[e-mail]"?

<?php
echo "<hr>";
echo "<br>";
$json = '{
        "Id" : {
               "Name" : "Karen",
                "email" : "[e-mail]",
                "password" : "123456"
    },

        "ID2" : {
               "Name" : "Anush",
                               "email" : "[e-mail]",
                               "password" : "1992120"
    }
}';

Answer 1

[AlxMrz]

В общем виде вот так:

<?php
echo "<hr>";
echo "<br>";
$json = '{
        "Id" : {
               "Name" : "Karen",
                "email" : "[e-mail]",
                "password" : "123456"
    },

        "ID2" : {
               "Name" : "Anush",
                               "email" : "[e-mail]",
                               "password" : "1992120"
    }
}';
$decoded = json_decode($json);

$expectedValue;
foreach($decoded as $key=>$value) {
  if($value->email=='[e-mail]') {
    $expectedValue = $key;
  }
}
var_dump($expectedValue);