<?php echo $m1 = memory_get_usage(); echo "<br />"; “$var_string = "123";” echo $m2 = memory_get_usage()-$m1; echo "<br />"; “$n=123;” echo $m3 = memory_get_usage()-$m1-$m2; echo "<br />"; “$f=123.00;” echo $m4 = memory_get_usage()-$m1-$m2-$m3; echo "<br />"; “$var_array = array("123");” echo $m5 = memory_get_usage()-$m1-$m2-$m3-$m4; ?>