- var_export: documentation ( source)
<?php
$data[] = null;
$data[] = 0;
$data[] = 1;
$data[] = true;
$data[] = false;
foreach($data as $value)
{
$result = is_null($value);
echo "is_null ( ", var_export($value, true), " ) = ", var_export(is_null($value), true), " \n";}