大家好,又见面了,我是全栈君 定义和用法 PHP函数microtime()返回当前 Unix 时间戳和微秒数。...PHP函数microtime()语法 microtime(get_as_float) PHP函数microtime()参数与描述 get_as_float 如果给出了 get_as_float...说明 PHP函数microtime()仅在支持 gettimeofday() 系统调用的操作系统下可用。...举例 echo (microtime()); //0.25139300 1138197510 PHP函数microtime()通常用法如下: $mtime=explode...(‘ ‘,microtime()); $startTime=$mtime[1]+$mtime[0]; echo $startTime; //1385976275.33
其实这个函数的功能是返回带微秒的时间,PHP中声明如下: mixed microtime ([ bool $get_as_float = FALSE ] ) 关于返回值,文档中是这样描述的 By default..., microtime() returns a string in the form "msec sec", where sec is the number of seconds since the Unix...If get_as_float is set to TRUE, then microtime() returns a float, which represents the current time in...$mt=microtime(); $mt_f=microtime(true); var_dump($mt); var_dump($mt_f); ?...echo ini_get("precision"), "\n"; ini_set("precision",16); $mt=microtime(); $mt_f=microtime(true); var_dump
分享给大家供大家参考,具体如下: PHP获取毫秒时间戳,利用microtime()函数 php本身没有提供返回毫秒数的函数,但提供了一个microtime()函数,借助此函数,可以很容易定义一个返回毫秒数的函数...php的毫秒是没有默认函数的,但提供了一个microtime()函数,该函数返回包含两个元素,一个是秒数,一个是小数表示的毫秒数,借助此函数,可以很容易定义一个返回毫秒数的函数,例如: function...getMillisecond() { list($s1, $s2) = explode(' ', microtime()); return (float)sprintf('%.0f', (floatval...($s1) + floatval($s2)) * 1000); } /* * 获取时间差,毫秒级 */ function get_subtraction() { $t1 = microtime(true...); $t2 = microtime(true); return (($t2-$t1)*1000).'
php计时器可以计算代码执行时间,如下: 计时器 $start_time1 = microtime(true); /*中间插入代码*/ $end_time1 = microtime(true); echo
count = 1000; for($i=0;$i<$count;$i++){ $random_array[$i] = rand(0,$count); } # 空白对照 $start = microtime...(1); echo 'Do nothing takes:' . number_format((microtime(1) - $start), 6); echo "\n"; # 原生方法排序 $test_array...= $random_array; $start = microtime(1); sort($test_array); echo 'Origin sort takes:' . number_format...((microtime(1) - $start), 6); echo "\n"; # 冒泡排序 # 两两交换,思路很简单 $test_array = $random_array; $start = microtime...$test_array[$j+1] = $tmp; } } } echo 'Bubble sort takes:' . number_format((microtime
/** 获取当前时间戳,精确到毫秒 */ function microtime_float() { list($usec, $sec) = explode(" ", microtime())...; return ((float)$usec + (float)$sec); } /** 格式化时间戳,精确到毫秒,x代表毫秒 */ function microtime_format($...获取当前时间戳(精确到毫秒):microtime_float() 2....时间戳转换时间:microtime_format('Y年m月d日 H时i分s秒 x毫秒', 1270626578.66000000) 这里需要用到的是list()函数 list()定义和用法
/** 获取当前时间戳,精确到毫秒 */ function microtime_float() { list($usec, $sec) = explode(" ", microtime())...; return ((float)$usec + (float)$sec); } /** 格式化时间戳,精确到毫秒,x代表毫秒 */ function microtime_format($...获取当前时间戳(精确到毫秒):microtime_float() 2....时间戳转换时间:microtime_format('Y年m月d日 H时i分s秒 x毫秒', 1270626578.66000000) 这里需要用到的是list()函数 list()定义和用法 list(
多进程和协程执行顺序 伪代码样本 /** @desc 任务1 */ function task1(): void { $timeOne1 = microtime(true); for (...PHP_EOL; } $timeTwo1 = microtime(true); echo '[x] [写入文件-总时间] ' ....PHP_EOL; } $timeTwo2 = microtime(true); echo '[x] [发送邮件-总时间] ' ....PHP_EOL; } $timeTwo3 = microtime(true); echo '[x] [发送短信-总时间] ' ....microtime(true); echo '[x] [总执行时间] ' .
(); $sort = Sort::bubbleSort($source); $time2 = microtime(); $timeuse = $time2 - $time1; echo '冒泡共使用时间...\n"; $time1 = microtime(); $sort = Sort::bubbleSortBetter($source); $time2 = microtime(); $timeuse =...\n"; $time1 = microtime(); $sort = Sort::selectSort($source); $time2 = microtime(); $timeuse = $time2...\n"; $time1 = microtime(); $sort = Sort::insertSort($source); $time2 = microtime(); $timeuse = $time2...\n"; $time1 = microtime(); $sort = Sort::quickSort($source); $time2 = microtime(); $timeuse = $time2
$mode) { $t = microtime(); return; } $t1 = microtime(); list($m0,$s0) = explode(" ",$t);...= mysql_query($sql,$this->link) or $this->displayerror($sql); $end_time = array_sum(explode(' ', microtime...TODO-Item ;func=detail&aid=571934&group_id=23067&atid=377411 $querytime_before = array_sum(explode(' ', microtime...PMA_DBI_try_query($full_sql_query, null, PMA_DBI_QUERY_STORE); $querytime_after = array_sum(explode(' ', microtime...php function getMillisecond() { list($t1, $t2) = explode(' ', microtime()); return (float)sprintf('%.0f
$i; } $str = $array[150000]; $time1 = microtime(true); array_search($str, $array); $time2 = microtime...\n"; $time3 = microtime(true); $new_array = array_flip($array); isset($new_array[$str]); $time4 = microtime..., $array); } $time2 = microtime(true); echo '原始方法:'....\n"; $time3 = microtime(true); $new_array = array_flip($array); for ($i=0; $i<5000; $i++){ isset($...new_array[$str]); } $time4 = microtime(true); echo '新方法:'.
microtime() 函数返回当前 Unix 时间戳和微秒数,本函数以 "msec sec" 的格式返回一个字符串,其中 sec 是自 Unix 纪元(0:00:00 January 1, 1970...MB'; return $memory; } //得到加上微妙在内的准确的时间戳 function microtime_float() { list($usec, $sec...) = explode(" ", microtime()); return ((float)$usec + (float)$sec); } class t{ static $start_time...{ self::$start_memory = memory_get_usage(); //单位为 byte(s) self::$start_time = microtime_float...start_memory.')|------->'; } public static function end() { self::$end_time = microtime_float
php数据序列化测试实例详解 测试代码 $msg = ['test'=>23]; $start = microtime(true); for($i=0;$i<100000;$i++){ $packMsg...rn"; $end = microtime(true); echo 'run time:'.($end-$start).'s'."rn"; echo 'memory usage:'....KBrn"; /* $start = microtime(true); for($i=0;$i<100000;$i++){ $jsonMsg = json_encode($msg); } echo 'json...rn"; $end = microtime(true); echo 'run time:'.($end-$start).'s'."rn"; echo 'memory usage:'....rn"; $end = microtime(true); echo 'run time:'.($end-$start)."srn"; echo 'memory usage:'.
/** * @start time */ function proStartTime() { global $startTime; $mtime1 = explode(" ", microtime.../** * @End time */ function proEndTime() { global $startTime,$set; $mtime2 = explode(" ", microtime...*********************************** 华丽的分割线 **************************************/ // 实例2 $t1 = microtime...(true); sleep(3); $t2 = microtime(true); echo '程序耗时'.round($t2-$t1,3).'
PHP_EOL; } $timeTwo1 = microtime(true); echo '[x] [写入文件-总时间] ' ....PHP_EOL; } /** @desc 任务2 */ function task2(): void { $timeOne2 = microtime(true); for ($i =...PHP_EOL; } $timeTwo2 = microtime(true); echo '[x] [发送邮件-总时间] ' ....PHP_EOL; } /** @desc 任务3 */ function task3(): void { $timeOne3 = microtime(true); for ($i =...PHP_EOL; } $timeTwo3 = microtime(true); echo '[x] [发送短信-总时间] ' .
function get_microtime(){ list($usec, $sec) = explode(' ', microtime()); return (float)$usec + (float...)$sec; } // 记录开始时间 $starttime = get_microtime(); // 执行10万次获取随机小数 for($i=0; $i<100000; $i++){ randFloat...php // 获取microtime function get_microtime(){ list($usec, $sec) = explode(' ', microtime()); return...(float)$usec + (float)$sec; } // 记录开始时间 $starttime = get_microtime(); // 执行10万次获取随机小数 for($i=...0; $i<100000; $i++){ lcg_value(); } // 记录结束时间 $endtime = get_microtime(); // 输出运行时间 printf("
\n"; $t3 = microtime(true); selectSort($a); //选择排序 $t4 = microtime(true); echo "选择排序用时:"....\n"; $t5 = microtime(true); insertSort($a); //插入排序 $t6 = microtime(true); echo "插入排序用时:"....\n"; $t7 = microtime(true); quickSort($a); //快速排序 $t8 = microtime(true); echo "快速排序用时:"....\n"; $t9 = microtime(true); sort($a); $t10 = microtime(true); echo "sort排序用时:".(($t10-$t9)*1000)."...\n"; $t11 = microtime(true); mergeSort($a); $t12 = microtime(true); echo "归并排序用时:".
$renderer = Swoft::getBean('view'); $content = $renderer->render('home/index'); $end_time = microtime...** * @RequestMapping("/") * @throws Throwable */public function index(): Response{ $begin_time = microtime...$renderer = Swoft::getBean('view'); $content = $renderer->render('home/index'); $end_time = microtime...* @Before() */ public function beforeAdvice() { // 起点时间 $this->time_begin = microtime...function afterAdvice(JoinPoint $joinPoint) { /** @var float 执行结束 */ $timeFinish = microtime
的连接效率,各连接100次mysql数据库 */ header("Content-type:text/html;charset=utf8"); //通过pdo链接数据库 $pdo_startTime = microtime...;$i<=100;$i++){ $pdo = new PDO("mysql:host=localhost;dbname=test","root","1234"); } $pdo_endTime = microtime...pdo_time = $pdo_endTime - $pdo_startTime; echo $pdo_time; echo "<hr/ "; //通过mysql链接数据库 $mysqli_startTime = microtime...true); for($i=1;$i<=100;$i++){ mysqli_connect("localhost","root","1234","test"); } $mysqli_endTime = microtime
测试pdo和mysqli的执行效率 */ header("Content-type:text/html;charset=utf-8"); //通过pdo链接数据库 $pdo_startTime = microtime...bindParam(':addtime',$addtime); $sth- bindParam(':user_id',$user_id); $sth- execute(); } $pdo_endTime = microtime...pdo_time = $pdo_endTime - $pdo_startTime; echo $pdo_time; echo "<hr/ "; //通过mysql链接数据库 $mysqli_startTime = microtime...")"; mysqli_query($mysqli,$sql); } $mysqli_endTime = microtime(true); $mysqli_time = $mysqli_endTime
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