array unset in php code example

Example 1: php unset array key

unset($dataArray['key']);

Example 2: 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 3: php unset

// Destroy a variable
<?php
unset ($var1, $var2.... )
?>

Example 4: remove array values php

array_splice(array, start, length, array)