unset array and then set arrayh code example

Example 1: php delete element from array

//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

Example 2: how to delete item from array php

$array = [0 => "a", 1 => "b", 2 => "c"];
unset($array[1]);