Question

Ok I have ten variables but one needs to be set, but I need to check for each of the values until one is set. I’m doing a SWITCH/CASE statement but I’m not sure if this is the best approach because I don’t see how I can return only the variable that I need set.

$passed_var = 'A'; // Static

$var_array = getSelectedVar($passed_var);

foreach($var_array as $key => $val) {
    echo "Key: " . $key . " VALUE: " . $val . "<br />\n";
}

// How do I assign one of these values?
if(isset($var_1)) {
    echo "Var 1 Set<br />\n";
} elseif(isset($var_2)) {
    echo "Var 2 Set<br />\n";
} elseif(isset($var_3)) {
    echo "Var 3 Set<br />\n";
} elseif(isset($var_4)) {
    echo "Var 4 Set<br />\n";
} elseif(isset($var_5)) {
    echo "Var 5 Set<br />\n";
} elseif(isset($var_6)) {
    echo "Var 6 Set<br />\n";
} elseif(isset($var_7)) {
    echo "Var 7 Set<br />\n";
} elseif(isset($var_8)) {
    echo "Var 8 Set<br />\n";
} elseif(isset($var_9)) {
    echo "Var 9 Set<br />\n";
} elseif(isset($var_10)) {
    echo "Var 10 Set<br />\n";
}

function getSelectedVar($passed_var) {
    $passed_var = strtoupper($passed_var);
    $update_var = array();

    switch ($passed_var) {
        case 'A':
        case 'AB':
        case 'ABC':
        case 'ABCD':
            $update_var_1 = 1;
            $update_var = array('update_var_1'=>'1');
            break;
        case 'B':
        case 'BA':
            $update_var_2 = 1;
            $update_var = array('update_var_2'=>'1');
            break;
        case 'C':
            $update_var_3 =1;
            $update_var = array('update_var_3'=>'1');
            break;
        case 'D':
        case 'DA':
            $update_var_4 =1;
            $update_var = array('update_var_4'=>'1');
            break;
        case 'E':
            $update_var_5 =1;
            $update_var = array('update_var_5'=>'1');
            break;
        case 'F':
            $update_var_6 =1;
            $update_var = array('update_var_6'=>'1');
            break;
        case 'G':
            $update_var_7 = 1;
            $update_var = array('update_var_7'=>'1');
            break;
        case 'H':
        case 'HA':
        case 'HB':
            $update_var_8 =1;
            $update_var = array('update_var_8'=>'1');
            break;
        case 'I':
            $update_var_9 =1;
            $update_var = array('update_var_9'=>'1');
            break;
        case 'J':
        case 'JA':
            $update_var_10 =1;
            $update_var = array('update_var_10'=>'1');
            break;
        default:
            $update_var = '';
    }

    return $update_var;
}

Am I over complicating things???

Answer 1

I think what you need here is the $GLOBALS array. For Example, if you assign $GLOBALS[‘var_1’] = 1 then when you return from the function, the variable $var_1 will be set to 1.