php pear Benchmark
Benchmark
基本信息
Version: 1.2.9
Release date: 2011-12-11 13:02 UTC
Description: 测试php脚本性能的框架(Framework to benchmark PHP scripts or function calls. )
Download: Benchmark pear
安装与配置
下载文件后解压文件目录结构如下
运行timer_example.php显示效果图如下
功能使用
Timer.php
主要函数:
$timer->start() 开始标记 相当于 $timer->setMarker("start')
测试 is_file与file_exists性能对比$timer->setMarker('mark'); 标记 返回页面时此处标记到上一个标记之间的 时间、百分比 $timer->stop() 结束标记 相当于 $timer->setMarker('stop')
$timer->display(); 输出到页面
<?php require 'Benchmark/Timer.php'; $filename='C:\Users\baixinxing\Desktop\Benchmark-1.2.9\Benchmark-1.2.9\README'; $timer = new Benchmark_Timer(); $timer->start(); for ($index = 0; $index < 10000; $index++) { //判断给定文件名是否为一个正常的文件 is_file($filename); } $timer->setMarker('is_file'); for ($index = 0; $index < 10000; $index++) { //检查文件或目录是否存在 file_exists($filename); } $timer->setMarker('file_exists'); $timer->stop(); $timer->display();Copy after login
<喎?http://www.Bkjia.com/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHA+PGJyPgo8L3A+CjwvYmxvY2txdW90ZT4KPHA+PC9wPgo8cD48YnI+CjwvcD4KPGJsb2NrcXVvdGU+CjxwPjwvcD4KPGgzPkl0ZXJhdGUucGhwPC9oMz4KPGJsb2NrcXVvdGU+CmZ1bmN0aW9uIHJ1bigpICAgINTL0NAxMDC0znVzZXLA4GVhdLe9t6iyorSrss7K/aGudGVzdKGvIMD9o7okYmVuY2htYXJrLT5ydW4oMTAwLCA="user->eat', 'test');
function get() 返回函数每次执行时间和平均时间
<?php require_once 'Benchmark/Iterate.php'; $benchmark = new Benchmark_Iterate; class MyClass { function foo() { for ($index = 0; $index < 100; $index++) { $a=null; if (null === $a); } } } $o = new MyClass(); $benchmark->run(5, 'o->foo', 'test'); $result = $benchmark->get(); var_dump($result); ?>Copy after login

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.

The advantages of C++ in web development include speed, performance, and low-level access, while limitations include a steep learning curve and memory management requirements. When choosing a web development language, developers should consider the advantages and limitations of C++ based on application needs.

Using the database callback function in Golang can achieve: executing custom code after the specified database operation is completed. Add custom behavior through separate functions without writing additional code. Callback functions are available for insert, update, delete, and query operations. You must use the sql.Exec, sql.QueryRow, or sql.Query function to use the callback function.

C++ has great potential in mobile development because of: a huge developer community and rich learning resources; efficient memory management and low-level control, bringing excellent performance; WORA model, which can be written once and run across Android, iOS, and Windows; widely Used for game engine development, low latency and resource management functions meet high-performance game requirements.

JSON data can be saved into a MySQL database by using the gjson library or the json.Unmarshal function. The gjson library provides convenience methods to parse JSON fields, and the json.Unmarshal function requires a target type pointer to unmarshal JSON data. Both methods require preparing SQL statements and performing insert operations to persist the data into the database.

To avoid PHP database connection errors, follow best practices: check for connection errors and match variable names with credentials. Use secure storage or environment variables to avoid hardcoding credentials. Close the connection after use to prevent SQL injection and use prepared statements or bound parameters.
