destroy variable php code example

Example 1: destroy php variable

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

Example 2: destroy php variable

<?php

$first = 100;
$second = 200;

$third = $first + $second;
echo "Sum = ".$third;
// Destroy a variable with unset function
unset($third);

//after delete the variable call it again to test
echo "Sum = ".$third;
?>

Example 3: php reset variable value

unset (var1, var2.... )

Example 4: php reset variable value

<?php
$xyz='w3resource.com';
echo 'Before using unset() the value of $xys is : '. $xyz.'<br>';
unset($xyz);
echo 'After using unset() the value of $xys is : '. $xyz;
?>