Unset an array element inside a foreach loop [duplicate]

Answer 1

foreach ($this->result['list'] as $key => &$row) {
    if ($this_row_is_boring) {
        unset($this->result['list'][$key]);
    }
}
unset($row);

Remember: if you are using a foreach with a reference, you should use unset to dereference so that foreach doesn't copy the next one on top of it. More info