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PHP获取脚本运行时间的应用

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Release: 2016-06-13 09:33:28
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   header("content-type:text/html;charset=utf-8");

  //microtime— 返回当前 Unix 时间戳和微秒数

  $oldtime = microtime(true);

  echo "本脚本运行的时间为:";

  $v=0;

  for ($i = 0; $i

  $v++;

  }

  $newtime =microtime(true);

  //获取时间差

  $runtime = $newtime-$oldtime;

  //将时间戳变为字符串—var_export 输出或返回一个变量的字符串表示

  $runtime=var_export($runtime);

  //截取字符串substr_count计算字串出现的次数

  $postion = substr_count($runtime, 'E');

  $runtime = substr($runtime,0,$postion-1);

  //将字符串值转换为floatfloatval — 获取变量的浮点值

  $runtime = floatval($runtime)/1000;

  echo $runtime."秒";

  ?>

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