Backend Development
PHP Tutorial
Introduction to installing xhprof for performance analysis in PHP 7.1
Introduction to installing xhprof for performance analysis in PHP 7.1
This article mainly introduces the introduction of installing xhprof for performance analysis in PHP 7.1. It has a certain reference value. Now I share it with you. Friends in need can refer to it
Install Extension
The xhprof extension version is obtained from https://github.com/longxinH/xhprof (a third-party library, the official version does not support php7)
Download and compile the xhprof extension
Operation in the html directory of the web:
git clone https://github.com/longxinH/xhprof
Compile extension
cd xhprof/extension/phpize ./configure makemake install
Modify php.ini configuration
[xhprof] extension=xhprof.so; xhprof.output_dir=/tmp/xhprof
xhprof.output_dir is the output directory of xhprof. Each time the save_run method of xhprof is executed, a run_id.project_name.xhprof file will be generated. It doesn't matter where this directory is. Note that the permissions of this path must be readable and writable! ! Otherwise, the file cannot be generated successfully
Restart php-fpm
sudo service php7.1-fpm restart
Add test code
<?php xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY);// 要检查性能的代码 $xhprof_data = xhprof_disable(); include_once '/var/www/html/xhprof/xhprof_lib/utils/xhprof_lib.php'; include_once '/var/www/html/xhprof/xhprof_lib/utils/xhprof_runs.php'; $xhprof_runs = new \XHProfRuns_Default(); $run_id = $xhprof_runs->save_run($xhprof_data, 'your_project');
Two files, xhprof_lib.php and xhprof_runs.php, need to be introduced into the test code
View the generated report
Required Visit: xhprof/xhprof_html/index.php file view:
http://localhost/xhprof/xhprof_html/index.php?run=5b35d3dfa8c29&source=your_project
The parameter after run is $run_id, and the source parameter is your_project configuration The name
If the graph is generated incorrectly, you need to install the plug-in:
sudo apt-get install graphviz
Actual demonstration code
<?php
function test1(){
for($i=0;$i<10;$i++){
echo 'aaa'.$i.'<br>';
}
}// start profilingxhprof_enable();
test1();
// stop profiler
$xhprof_data = xhprof_disable();
// display raw xhprof data for the profiler runprint_r($xhprof_data);
include_once "xhprof_lib.php";include_once "xhprof_runs.php";
// save raw data for this profiler run using default
// implementation of iXHProfRuns.
$xhprof_runs = new XHProfRuns_Default();
// save the run under a namespace "xhprof_test"
$run_id = $xhprof_runs->save_run($xhprof_data, "xhprof_test");echo "---------------\n".
"Assuming you have set up the http based UI for \n".
"XHProf at some address, you can view run at \n".
"http://<xhprof-ui-address>/index.php?run=$run_id&source=xhprof_test\n".
"---------------\n";The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!
Related recommendations:
The difference and installation of LAMP, LNMP and LNAMP
Use Wamp to build a Php local development environment and HBuilder debugging method
The above is the detailed content of Introduction to installing xhprof for performance analysis in PHP 7.1. For more information, please follow other related articles on the PHP Chinese website!
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
1664
14
1423
52
1317
25
1268
29
1246
24
PHP and Python: Comparing Two Popular Programming Languages
Apr 14, 2025 am 12:13 AM
PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.
PHP in Action: Real-World Examples and Applications
Apr 14, 2025 am 12:19 AM
PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.
Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1?
Apr 17, 2025 am 12:06 AM
In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.
PHP: A Key Language for Web Development
Apr 13, 2025 am 12:08 AM
PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7
How does PHP handle file uploads securely?
Apr 10, 2025 am 09:37 AM
PHP handles file uploads through the $\_FILES variable. The methods to ensure security include: 1. Check upload errors, 2. Verify file type and size, 3. Prevent file overwriting, 4. Move files to a permanent storage location.
How does PHP type hinting work, including scalar types, return types, union types, and nullable types?
Apr 17, 2025 am 12:25 AM
PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.
The Enduring Relevance of PHP: Is It Still Alive?
Apr 14, 2025 am 12:12 AM
PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.
PHP vs. Python: Understanding the Differences
Apr 11, 2025 am 12:15 AM
PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.
