Example explanation of using XHProf to find PHP performance bottlenecks

//github上下载https://github.com/facebook/xhprof unzip xhprof-master.zip cd xhprof-master/extension/ /usr/local/php/bin/phpize ./configure --with-php-config=/usr/local/php/bin/php-config --enable-xhprof make && make install

[xhprof] extension=xhprof.so xhprof.output_dir=/tmp

//xhprof下载压缩包中的xhprof_html和xhprof_lib cp -r xhprof-master/xhprof_html /usr/local/nginx/html/xhprof/ cp -r xhprof-master/xhprof_lib /usr/local/nginx/html/xhprof/

server{ listen 80; server_name will.com; location / { root /usr/local/nginx/html; index index.html; } location ~ \.php$ { root html; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } }

//需要安装graphviz否则查看性能图片时候会报failed to execute cmd: " dot -Tpng". stderr: `sh: dot: command not found ' yum -y install graphviz

//入口文件的开始位置 xhprof_enable(XHPROF_FLAGS_MEMORY | XHPROF_FLAGS_CPU); 业务逻辑... //业务逻辑结束后 $xhprof_data = xhprof_disable(); include_once "/usr/local/nginx/html/xhprof/xhprof_lib/utils/xhprof_lib.php"; include_once "/usr/local/nginx/html/xhprof/xhprof_lib/utils/xhprof_runs.php"; $objXhprofRun = new XHProfRuns_Default();//数据会保存在php.ini中xhprof.output_dir设置的目录去中 $run_id = $objXhprofRun->save_run($xhprof_data, "test");

"; print_r($info); } //不作数据校验 $rules = array( 2=>array('min'=>1, 'max'=>10, 'chance'=>30),//金额:分 概率:百分之(默认为100%,不足100%按第一档计算) array('min'=>11, 'max'=>25, 'chance'=>60), array('min'=>26, 'max'=>50, 'chance'=>10), array('min'=>50, 'max'=>80, 'chance'=>0), array('min'=>80, 'max'=>100, 'chance'=>0), ); $total_money = 10000;//红包总金额 $res = array(); while($total_money>0) { $index = getLevel($rules); $money = setMoney($rules, $index); if ($money > $total_money)//金额不足 { $money = $total_money; $total_money = 0; } else { $total_money -= $money; } $res[] = ($index+1)."---".$money; } echo show($res); echo $total_money . "
"; //1.先确定档次 function getLevel($rules) { $level = array(); $chance = 0; foreach($rules as $k=>$v) { if ($v['chance']>0) { $chance += $v['chance']*100;//扩大100倍 $level[$k] = $chance; } } $index = 0; $rand_num = mt_rand(1, 10000); foreach($level as $k=>$v) { if ($rand_num <= $v) { $index = $k; break; } } return $index; } //2.确定档次之后，再确定金额 function setMoney($rules, $index) { $money = mt_rand($rules[$index]['min']*10000, $rules[$index]['max']*10000)/10000; $money = ceil($money); $money > 1 && $money = $money -1;//防止出现免单情况 return $money; } $xhprof_data = xhprof_disable(); include_once "/usr/local/nginx/html/xhprof/xhprof_lib/utils/xhprof_lib.php"; include_once "/usr/local/nginx/html/xhprof/xhprof_lib/utils/xhprof_runs.php"; $objXhprofRun = new XHProfRuns_Default();//数据会保存在php.ini中xhprof.output_dir设置的目录去中 $run_id = $objXhprofRun->save_run($xhprof_data, "test"); echo "http://will.com/xhprof/xhprof_html/index.php?run=$run_id&source=test";//变量$runId是本次请求生成分析结果的id，最后我们输出了一个链接地址，使用改地址就可以看到本次请求的分析结果。