Answers for "unset item in php"

php unset array element

//Delete array items with unset(no re-index) or array_splice(re-index)
$colors = array("red","blue","green");                             
unset($colors[1]);//remove second element, do not re-index array

$colors = array("red","blue","green");
array_splice($colors, 1, 1); //remove second element, re-index array

php unset by value

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