What are the advantages and disadvantages of using unofficial PHP resources like selfphp.info for function references?

Using unofficial PHP resources like selfphp.info for function references can have advantages such as providing quick access to information and examples, but it may also have disadvantages like outdated or inaccurate information. It is important to cross-reference information from official PHP documentation to ensure accuracy and reliability.

// Example of using official PHP documentation for function references
// Official PHP documentation: https://www.php.net/manual/en/function.array-push.php

$myArray = [1, 2, 3];
array_push($myArray, 4);
print_r($myArray);