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PHP PHP Functions PHP Internal Functions PHP Array Functions

Georgina Pacey
Georgina Pacey
4,139 Points

Preview is blank. array_walk

I am sure it's something obvious, but why does the preview come up blank?


$names = array(
  'Mike' => 'Frog',
  'Chris' => 'Teacher',
  'Hampton' => 'Teacher'

function print_info($value, $key){
  echo "$key is a $value.</br>";  

array_walk($names, 'print info');

1 Answer

Hmm, it looks like your function name is 'print_info', but you've called 'print info'.

Try adding an underscore like this:


array_walk($names, 'print_info');