What are some best practices for referencing PHP functions and their documentation?

When referencing PHP functions and their documentation, it is important to be clear and specific in your references to ensure accuracy and understanding. One best practice is to always refer to the official PHP documentation available on the PHP website, as it provides comprehensive information on all built-in functions, their parameters, return values, and usage examples. 

// Example of referencing the PHP documentation for the strtoupper function
// Official PHP documentation: https://www.php.net/manual/en/function.strtoupper.php

$string = "hello world";
$uppercaseString = strtoupper($string);

echo $uppercaseString;

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PHP functions documentation best practices referencing error handling

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