PHP Record code run time

Code Run Time Measurement

Typically in code that requires performance, the test code is added to the calculation.

But every time to write Microtime, End–start may not be too troublesome, so simply write a class to engage.

Code

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; }}

Usage

$obj = new Timecost (); $token = ' test_a '; $obj->addcost ($token); Some_code (); $obj->closecost ($token); $reslut = $ Obj->getstring ($token);

Description

• Time accuracy: The default is to retain 6 bits, is enough, want more precision, you can specify the $scale parameter when the new object

• Token:token is meant to represent a piece of code, and the corresponding result is written to the record array in the form of key (token), value.

  So using a token multiple times for addcost and closeclost results will accumulate.

• GetString: Passing tokens Returns the result of the token, and by default all results in the record are stitched back.

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