Unset php

Php unset array key

unset($dataArray['key']);

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;
?>

Php unset reference

$ref = &$var;

unset($ref);

Unset php

//remove variable
unset($var1,$var2,$var3;
//remove array
unset($array['$key']);

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