Where to find a comprehensive list of PHP functions

A comprehensive list of PHP functions can be obtained from the following resources: Official PHP Manual (https://www.php.net/manual/en/index.php) Packagist (https://packagist.org/packages/php) Preset function list (for example, PHP common function list: https://www.w3resource.com/php-exercises/php-common-functions.php)

Where A comprehensive list of PHP functions can be found

PHP has a wide range of in-built functions that help programmers to effectively develop various applications. It is important to understand these functions and their usage. This article will introduce you to several reliable resources where you can find a comprehensive list of PHP functions.

Official PHP Manual

The Official PHP Manual is the authoritative source for information on PHP functions. It contains detailed documentation for each available function, including syntax, parameters, return values, and usage examples.

Visit: https://www.php.net/manual/en/index.php

Packagist

Packagist is a popular PHP package repository. In addition to the Composer package, it also provides a list of PHP functions, including third-party extensions and built-in functions.

Visit: https://packagist.org/packages/php

Preset function list

Here are some preset lists for PHP functions by category or function Category:

• PHP Common Function List: https://www.w3resource.com/php-exercises/php-common-functions.php
• PHP array function list: https://www.php.net/manual/en/ref.array.php
• PHP string function list: https: //www.php.net/manual/en/ref.strings.php

Practical case

The following is a practical case using the array_map() function Case:

$numbers = [1, 2, 3, 4, 5];

// 将每个数字乘以 2
$doubledNumbers = array_map(function ($number) {
    return $number * 2;
}, $numbers);

print_r($doubledNumbers); // 输出：Array ( [0] => 2 [1] => 4 [2] => 6 [3] => 8 [4] => 10 )

This example shows how to use array_map() to apply a callback function to each element in an array, thereby creating a new array containing doubled numbers.

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