Answers for "remove values from array by value php"

php delete element by value

$colors = array("blue","green","red");

//delete element in array by value "green"
if (($key = array_search("green", $colors)) !== false) {
    unset($colors[$key]);
}

php unset by value

if (($key = array_search($del_val, $messages)) !== false) {
    unset($messages[$key]);
}