PHP array of functions: interpreter unexpectedly calls all functions during evaluation of the array-CodePudding

I have this little helper method here:

private function continueConv($attribute, $next): void
{
    $sequence = [   $this->askName(),
                    $this->askEmail(),
                    $this->askPhone(),
                    $this->manageMessage()
                ];

    match($attribute) {
        'user_name' => $sequence[0   (int)$next], 
        'user_email' => $sequence[1   (int)$next], 
        'user_phone' => $sequence[2   (int)$next]
    };

    return;
}

When the interpreter evaluates the $sequence array, instead of just storing the pointers to those functions, it calls them all! Is this a bug? Are there working alternatives? Thanks

EDIT: alternative approach that works:

private function continueConv($attribute, $next): void
{

    match($attribute) {
        'user_name' => $next ? $this->askEmail() : $this->askName(), 
        'user_email' => $next ? $this->askPhone() : $this->askEmail(), 
        'user_phone' => $next ? $this->manageMessage() : $this->askPhone()
    };

    return;
}

but I'd prefer to use an array of functions in order to easily change the sequence.

CodePudding user response：

You can use an array containing the object and method name as a callable. So just put the method names in the array.

private function continueConv($attribute, $next): void
{
    $sequence = ['askName', 'askEmail', 'askPhone', 'manageMessage'];

    $func = [$this, match($attribute) {
        'user_name' => $sequence[0   $next], 
        'user_email' => $sequence[1   $next], 
        'user_phone' => $sequence[2   $next]
    }];

    $func();
}