I recently came across a weird piece of code

if(foo == bar){
 function foo_bar(){
   // Function definition

Is this a good practice of coding ?

1 Answer 1


There is one valid use case:

if( !function_exists("helloWorld") ) {
    function helloWorld() {

Other than that, it would be preferable to avoid defining your functions inside if blocks.

  • 4
    +1, there are enough landmines in PHP without creating your own. Aug 16, 2012 at 10:31

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