What are the potential pitfalls of mixing include and function calls in PHP?

Mixing include and function calls in PHP can lead to unexpected behavior and errors, especially if the included file contains function definitions that are called before the include statement. To avoid this issue, it's best to separate the include statements from function calls in your PHP code. 

// Include the file with function definitions first
include 'functions.php';

// Call the functions after including the file
$result = myFunction();
echo $result;

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include function calls PHP potential pitfalls mixing

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