close
<?php
$var_name = TRUE;
if (is_null($var_name))
{
echo 'Variable is NULL';
}
else
{
echo 'Variable is not NULL';
}
?>
輸出 :
Variable is not NULL
全站熱搜
<?php
$var_name = TRUE;
if (is_null($var_name))
{
echo 'Variable is NULL';
}
else
{
echo 'Variable is not NULL';
}
?>
輸出 :
Variable is not NULL