28.4.2. Functions

Here is an example of a simple PHP function:

function get_lang($module) {
  global $currentlang, $language;

It has the following structure, common to every PHP function:

  • the function name, preceded by the keyword "function",

  • the function parameters in the parenthesis,

  • the global variables that we intend to use in this function, registered through the "global" keyword (we cannot use any global variables, if we do not register them as such),

  • the curly brackets that include the function's content

Functions may be called from anywhere in the PHP code. See also PHP functions.

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