在同一个foreachloop中休息并继续[关闭]

Question

is it possible to have 2 conditions in the same foreach loop with one which continues, and one which breaks. so I want to find all full input fields and make them $$key, but make only the first empty input field $_POST['email']. can I do this in the same loop or do I nee 2 loops? here is an example, this doesn't work, it breaks.

foreach( $_POST as $key=> $for ) {
    if ( $for!='') {
        $$key = $for;   continue;
    } else if ( $for=='') { 
        $$key = $_POST['email'];  break;
    }

Answer 1

Your example code doesn't make a lot of sense: if ($for!=''), then the only other thing which can possibly be is $for=='', therefore the second if clause is redundant. Further, what are you tring to achive by setting the result in $$key - there may be a reason for this but it is not shown in the code you've published.

Yes, it's quite possible to have multiple break and continue constructs inside a loop. And they will work properly.

However it would be much more efficient to implement your code as simply:

$email=$_POST['email'];

(although this also removes a lot side-effects and potential vulnerabilities from the code).