how to delete array php code example

Example 1: 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]);
}

Example 2: php erase element from array

foreach ($items as $key =>$item){
  if(condition){
    unset($item[$key]);
  }
}