个回答

• 村南

  2016-07-19 15:55:25

  需要把双引号去掉。
  

  <?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; 

  ?>

  
  

  
  

  1