php运行状态报告工具：php-timer

最近写了一个异步mysql客户端的封装，想与传统的串行方式做下性能对比。包括运行时间、内存使用情况等信息。在github和packagist上搜索并没有找到自己想要的，xhprof又太大了，结果也太复杂，不符合现在的需要。所以决定自己写一个package，来实现对php脚本运行时间和内存使用情况的监控，并生成报告。

示例代码： 

requiredirname(dirname(__FILE__)) . DIRECTORY_SEPARATOR .'vendor'. DIRECTORY_SEPARATOR .'autoload.php';//初始化，设置内存单位$timer=new\Jenner\Timer(\Jenner\Timer::UNIT_KB);//记录a状态$timer->mark('a');sleep(2);//记录b状态$timer->mark('b');sleep(3);//记录c状态$timer->mark('c');sleep(4);//记录d状态$timer->mark('d');//打印总体报告（不包含差值）$timer->printReport();//获取总体报告，返回数组$report=$timer->getReport();//获取一个mark的报告$a_report=$timer->getReport('a');print_r($a_report);//打印a状态和b状态的差异信息，包含运行时间、使用内存等$timer->printDiffReportByStartAndEnd('a','b');//获取a状态和b状态的差异报告$ab_diff_report=$timer->getDiffReportByStartAndEnd('a','b');//打印第一个mark和最后一个mark之间的差异信息$timer->printDiffReport();//获取第一个mark和最后一个mark之间的差异信息$diff_report=$timer->getDiffReport();

输出结果：  

 ------------------------------------------mark:atime:1437535424.9998smemory_real:1280KBmemory_emalloc:833.046875KBmemory_peak_real:1280KBmemory_peak_emalloc:843.2890625KB------------------------------------------mark:btime:1437535427smemory_real:1280KBmemory_emalloc:834.2265625KBmemory_peak_real:1280KBmemory_peak_emalloc:843.2890625KB------------------------------------------mark:ctime:1437535430.0002smemory_real:1280KBmemory_emalloc:835.1875KBmemory_peak_real:1280KBmemory_peak_emalloc:843.2890625KB------------------------------------------mark:dtime:1437535434.0004smemory_real:1280KBmemory_emalloc:836.1484375KBmemory_peak_real:1280KBmemory_peak_emalloc:843.2890625KBArray(    [time] => 1437535424.9998    [memory_real] => 1310720    [memory_emalloc] => 853040    [memory_peak_real] => 1310720    [memory_peak_emalloc] => 863528)------------------------------------------mark:[diff] start_mark:a end_mark:btime:2.0001850128174smemory_real:0KBmemory_emalloc:1.1796875KBmemory_peak_real:0KBmemory_peak_emalloc:0KB------------------------------------------mark:[totaldiff]time:9.0006000995636smemory_real:0KBmemory_emalloc:3.1015625KBmemory_peak_real:0KBmemory_peak_emalloc:0KB

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