代码运行时间测量一般在要求性能的代码中, 会加入测试代码进行计算。 不过每次都要写microtime, end – start 未必太麻烦了, 所以简单的写了一个类去搞。 代码class TimeCost { private $cost = array(); private $record = array(); private $scale = 6; public function __construct($scale = 6) { $this->cost = array(); $this->record = array(); $this->scale = $scale; } public function __toString() { return $this->getString(); } /** * start to cal time. * * @param mixed $key */ public function addCost($key) { $this->cost[$key] = microtime(true); } /** * stop to cal time. * * @param mixed $key */ public function closeCost($key) { $cost = bcsub(microtime(true), $this->cost[$key], $this->scale); if (in_array($key, array_keys($this->record))) { $this->record[$key] = bcadd($cost, $this->record[$key], $this->scale); } else { $this->record[$key] = $cost; } return $cost; } public function getString($key = null) { if ($key) { return "{$key}[{$this->record[$key]}]"; } $str = ''; foreach ($this->record as $k => $v) { $str .= "{$k}[{$v}]"; } return $str; } } 用法$obj = new TimeCost(); $token = 'test_a'; $obj->addCost($token); some_code(); $obj->closeCost($token); $reslut = $obj->getString($token); 说明
|