Return a loop in function php

Question

Is it possible to return a loop? not the result but the loop it self. I want to create a function in php. For example like this.

function myloop($sql){
$quer         


        

Answer 1

In PHP 5.5+ it is possible, using the yield keyword instead of return (this is called a generator):

function myloop($sql) {
    $query = mysql_query($sql);
    while (($row = mysql_fetch_assoc($query))) {
        yield $row;
    }
}

foreach (myloop('SELECT * FROM foo') as $row) {
    // do something with $row
}

This is not much different from what you could do with iterators in older PHP, but the code is much cleaner.