unset()
Syntax:
void unset(mixed var [, mixed var, ...])
var
Variable to unset.
Unsets a variable.
unset() destroys one or more variables and deallocates the memory associated with them.
Code:
<?php
$a = “Some data”;
unset($a);
if (!isset($a)) {
print “\$a is no longer available”;
}
?>
Output:
$a is no longer available
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