How to update a value an array?

Question

I have this variable $variable = "own=1,contract_start=1"; and I wanna find this variable an array. Array name is $variables this is my array:

Array
(
[own] => Array
    (
        [type] => bool
        [value] => 0
    )

[contr_name] => Array
    (
        [type] => bool
        [value] => 0
    )

[all_votes] => Array
    (
        [type] => int
        [value] => 0
    )

[contract_start] => Array
    (
        [type] => bool
        [value] => 0
    )

[contract_end] => Array
    (
        [type] => bool
        [value] => 0
    )

[T] => Array
    (
        [type] => clock
        [value] => 
    )

[a] => Array
    (
        [type] => int
        [value] => 1
    )

[candi_ID] => Array
    (
        [type] => int
        [value] => 1
    )

[voter_ID] => Array
    (
        [type] => int
        [value] => 1
    )

[] => Array
    (
        [type] => 
        [value] => 
    )

 )

if the value is not equal to existing value an array so I wanna update the value with variable value. This is my code:

$variable = "own=1,contract_start=1";
function updateTheValue($variables,$variable) {

    // Split variable looking for into name and value
    $vars = explode(",", $variable);
    $match = false;

    foreach ($vars as $var){
        $expbyequal = explode("=", $var);

        // If this variable is set
        if ( isset($variables [trim($expbyequal[0])]) )  {
            // Compare value with stored value
            if ( $variables [trim($expbyequal[0])]['value'] == trim($expbyequal[1]) ) {
                $match = true;
            }else{

                $variables[trim($expbyequal[0])] = ["value" => trim($expbyequal[1])]);
                $match = false;
            }
        }
    }
    return $match;
}
$testing = updateTheValue($variables,$variable);

Any idea will be appreciable.

Answer 1

Your function returns $match, which could be true or false, it doesn't allows you to see your changes.

function updateTheValue(&$variables,$variable) {

    // Split variable looking for into name and value
    $vars = explode(",", $variable);
    $match = false;

    foreach ($vars as $var){
        $expbyequal = explode("=", $var);

        // If this key exists in main keys
        if ( in_array(trim($expbyequal[0]), array_keys($variables)) )  {

            // Compare value with stored value
            if ( $variables [trim($expbyequal[0])]['value'] == trim($expbyequal[1]) ) {
                $match = true; 
            }else{ 
                $variables[trim($expbyequal[0])]["value"] = trim($expbyequal[1]);
                $match = false; 
            }
        }
    }
    return $match;
}

updateTheValue($variables,$variable);

print_r($variables);

With this function you will change data value which key exists in the main keys. You don't need to use $testing variable, cause reference & mutates your main array.

Demo