CODEWITHSUNDEEP
phparraysforeach
Jad Daoud
Jad Daoud

Reputation: 17

Access the name the variables in an (indexed) array in a loop

i am writing a php code that loops an array of variables using foreach and I am trying to get the name of variable to use it in the javascript code here's my code 

$arr = array($devices1, $devices2, $devices3, $devices4, $devices5, $devices6);
    foreach ($arr as $key => $value)
    {
        if($value == '1')
        {
            echo "
        <script type=\"text/javascript\">
        document.getElementById($key).checked = true;
        </script>
    ";
        }
    }

when i run the code, $key takes values 0,1,2 what i need is to take devices1, devices2, devices3... so the names of the variables. Can anyone help me out?

Upvotes: 0

Views: 44

Answers (1)

Shomz
Shomz

Reputation: 37711

Well, you can build the names your self ("devices" + ($key+1)) or make it an associative array (though it doesn't make much sense): 

$arr = array('devices1'=>$devices1,'devices2'=>$devices2,'devices3'=>$devices3);// etc...

However, what makes the most sense is to use a simple string array: 

$arr = array('devices1', 'devices2', 'devices3', 'devices4', 'devices5', 'devices6');

and then just use $value instead of $key in your JS snippet.

UPDATE

Here's how to use the associative array version:

FULL CODE

$arr = array('devices1'=>$devices1,'devices2'=>$devices2,'devices3'=>$devices3);
foreach ($arr as $key => $value)
{
    if($value == '1') // $value will be the value of each array item
    {
        echo "
    <script type=\"text/javascript\">
    document.getElementById($key).checked = true; // and $key is the string key
    </script>                                     // like 'devices1', etc.
";
    }
}

Upvotes: 2

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