<?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;
?>
他让你写的不用加双引号，你去掉试试
代码直接粘贴的吧
第四行和倒数第三行这种不需要双引号