Function documentation on the PHP official website

PHP official website provides function documentation to find and understand function usage, including description, syntax, parameters, return values, errors and examples. For example, to find documentation for array_slice(), visit https://www.php.net/manual/en/function.array-slice.php.

Function documentation on the PHP official website

The PHP official website provides detailed function documentation, allowing you to quickly find and understand the usage of functions .

Usage

To access the function documentation, visit the following URL:

https://www.php.net/manual/en/function.<name>.php

where <name> is the value you are looking for function name.

Example

For example, to find documentation for the array_slice() function, visit:

https://www.php.net/manual/en/function.array-slice.php

Documentation Structure

Function documentation usually includes the following parts:

• Description: A brief description of the purpose and use of the function.
• Syntax: The syntax of the function, including parameter and return value types.
• Parameters: Description of each parameter, including type and allowed values.
• Return value: The return value type and description of the function.
• Errors: A list of errors that may be thrown by the function.
• Examples: Code examples showing function usage.

Practical Case

Suppose you need to write a function to replace all spaces in a string with hyphens. You can quickly accomplish this task by referring to the str_replace() function documentation:

function replaceSpacesWithDashes($str) {
  return str_replace(' ', '-', $str);
}

In the function documentation you can find the syntax, parameters, and Returns a value, which allows you to easily write correct function implementations.

Tip

Function documentation can also contain other useful information, such as change logs, version compatibility, and performance considerations.

*If you need more advanced information, such as the underlying implementation or inner workings of a function, check out the PHP manual.
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