The following list is the top 100 most commonly used PHP functions: they are the most commonly used functions that come with PHP.
The functions are named and ordered from 1 to 100. The other 4500 functions are not currently ranked. The following frequency list represents how often this function is used in PHP code: References come from 1900 PHP open source projects. They were reviewed using version 1.2.5 of the Exakat static analysis engine. The average is the number of times this function is called in a project. Some functions are used by wrappers, while others are main functions.
For example, 4 out of 5 projects use the count function, and the function is called about 150 times. It shows that it is very popular and widely used.
Click the function name to jump to the PHP documentation. There are some summary insights at the bottom of the Top 100 article.
排行 | 函数 | 频率 | 平均值 |
---|---|---|---|
1 | count | 81.41 % | 147.67 |
2 | is_array | 77.32 % | 117.86 |
3 | substr | 74.62 % | 142.92 |
4 | in_array | 74.16 % | 79.55 |
5 | explode | 73.19 % | 71.51 |
6 | str_replace | 72.32 % | 101.05 |
7 | implode | 72.27 % | 66.59 |
8 | strlen | 70.07 % | 98.32 |
9 | array_merge | 69.46 % | 64.01 |
10 | strpos | 67.98 % | 78.18 |
11 | preg_match | 67.31 % | 76.60 |
12 | sprintf | 67.16 % | 119.46 |
13 | trim | 66.75 % | 81.28 |
14 | strtolower | 65.99 % | 59.62 |
15 | file_exists | 65.12 % | 45.13 |
16 | is_string | 61.39 % | 45.10 |
17 | preg_replace | 60.27 % | 54.28 |
18 | file_get_contents | 59.96 % | 20.71 |
19 | array_key_exists | 59.70 % | 57.50 |
20 | array_keys | 59.35 % | 39.59 |
21 | dirname | 56.44 % | 54.84 |
22 | function_exists | 53.58 % | 42.62 |
23 | array_map | 53.22 % | 19.45 |
24 | get_class | 53.12 % | 33.07 |
25 | class_exists | 52.50 % | 23.13 |
26 | is_object | 51.94 % | 35.35 |
27 | time | 51.79 % | 41.42 |
28 | json_encode | 51.48 % | 24.81 |
29 | date | 50.72 % | 52.18 |
30 | is_null | 49.69 % | 60.52 |
31 | is_numeric | 49.49 % | 40.69 |
32 | array_shift | 49.49 % | 23.28 |
33 | defined | 48.72 % | 86.82 |
34 | is_dir | 48.57 % | 22.86 |
35 | json_decode | 48.42 % | 17.39 |
36 | header | 48.16 % | 59.71 |
37 | strtoupper | 47.80 % | 30.95 |
38 | array_values | 47.24 % | 17.27 |
39 | md5 | 46.88 % | 23.74 |
40 | method_exists | 46.73 % | 19.05 |
41 | file_put_contents | 46.68 % | 12.49 |
42 | rtrim | 45.91 % | 18.08 |
43 | array_pop | 45.51 % | 20.60 |
44 | unlink | 44.59 % | 23.55 |
45 | basename | 44.59 % | 27.23 |
46 | realpath | 44.08 % | 15.90 |
47 | call_user_func | 43.97 % | 16.41 |
48 | call_user_func_array | 43.92 % | 18.40 |
49 | fopen | 43.77 % | 25.61 |
50 | microtime | 43.46 % | 14.41 |
51 | fclose | 42.85 % | 28.36 |
52 | is_int | 42.75 % | 15.78 |
53 | is_file | 42.08 % | 20.52 |
54 | array_slice | 41.83 % | 13.20 |
55 | preg_match_all | 40.55 % | 14.66 |
56 | ucfirst | 40.25 % | 17.02 |
57 | intval | 40.19 % | 88.13 |
58 | str_repeat | 40.14 % | 19.51 |
59 | serialize | 40.14 % | 22.05 |
60 | array_filter | 39.99 % | 13.87 |
61 | mkdir | 39.79 % | 11.17 |
62 | is_callable | 39.43 % | 11.94 |
63 | ltrim | 39.17 % | 10.90 |
64 | ob_start | 39.12 % | 13.26 |
65 | round | 39.07 % | 28.56 |
66 | fwrite | 38.97 % | 23.39 |
67 | array_unique | 38.87 % | 15.96 |
68 | array_search | 38.82 % | 14.19 |
69 | reset | 38.71 % | 20.79 |
70 | array_unshift | 38.10 % | 10.32 |
71 | parse_url | 37.90 % | 9.61 |
72 | func_get_args | 37.79 % | 28.33 |
73 | end | 37.49 % | 12.70 |
74 | base64_encode | 37.39 % | 14.15 |
75 | unserialize | 37.18 % | 18.35 |
76 | max | 36.98 % | 22.88 |
77 | preg_split | 36.98 % | 13.27 |
78 | gettype | 36.93 % | 16.16 |
79 | strrpos | 36.67 % | 11.95 |
80 | version_compare | 36.67 % | 14.87 |
81 | array_push | 36.67 % | 26.18 |
82 | floor | 36.11 % | 18.78 |
83 | strtotime | 36.01 % | 27.94 |
84 | htmlspecialchars | 35.96 % | 51.08 |
85 | ini_get | 35.85 % | 19.25 |
86 | ini_set | 35.60 % | 14.49 |
87 | chr | 35.34 % | 186.97 |
88 | extension_loaded | 35.29 % | 14.17 |
89 | is_bool | 35.24 % | 11.44 |
90 | ksort | 34.98 % | 10.82 |
91 | array_reverse | 34.93 % | 8.27 |
92 | ord | 34.73 % | 53.17 |
93 | uniqid | 34.68 % | 9.83 |
94 | strtr | 34.47 % | 12.90 |
95 | array_diff | 34.32 % | 11.13 |
96 | error_reporting | 34.17 % | 8.99 |
97 | ceil | 33.35 % | 11.99 |
98 | urlencode | 33.30 % | 29.63 |
99 | min | 32.69 % | 18.31 |
100 | print_r | 32.64 % | 14.12 |
前 100 分析
最常用的 PHP 函数是字符串函数,然后是数组函数,接着是文件函数。 (运算函数不在此列主要是因为他们通常基于运算符)
每个函数的链接都指向其对应的文档,事实上许多函数经过发展以及获得了许多新特性,例如:
count()
的第二个参数,dirname()
的第二个参数以及preg_match()
和str_replace()
接受数组作为参数等。有很多彩蛋。以上 100 个函数没有近期要废弃的计划。
在非内置库中,mbstring 排名第一、curl 第二,然后是 gd、filter 和 iconv。
md5
是最常用的加密函数,其次是Sha1
(#147)。print_r
出现在 1/3 的项目代码里面的某处,任何地方 ...由于
dirname(dirname(dirname()))
的调用,dirname
的使用频率非常高。array
、echo
、print
、empty
、isset
这些没有纳入此排名,它们的使用度肯定是非常高的。如下几个函数应该用运算符替代 :
array_push
,is_object
,func_get_arg
,chr
,call_user_func
。相当多的调用是为了知道值的类型。
数据库函数没有在这里排名:他们经常使用类,但功能仍然很频繁。可能是另一个前 100 名?
相比写入文件 PHP 更多的应用于读取文件。它还解码 base64。
使用键排序比使用值或使用键更频繁。
通常使用
file_get_contents
读取文件, 使用fwrite
写入文件。
后记
如果你正在学习 PHP,最好回顾一下这里排名的 100 个功能。它们是你加入一个编码团队后最常找到的功能。它们不是唯一的,但遇到它们时你会不那么惊讶。
相关学习推荐:php编程从入门到精通
The above is the detailed content of Collect 100 of the most commonly used PHP functions. For more information, please follow other related articles on the PHP Chinese website!

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.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

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 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 remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

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


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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Linux new version
SublimeText3 Linux latest version

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

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function