Is include_once() the best practice to avoid redeclaring functions in PHP?

To avoid redeclaring functions in PHP, using include_once() is a common practice. This function includes a file only once during a script's execution, preventing the redeclaration of functions that may exist in multiple included files. By using include_once(), you can ensure that functions are included and defined only once, avoiding any conflicts that may arise from multiple declarations. 

include_once('functions.php');
// Your code here

Keywords

include_once redeclaring functions PHP best practice functions

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