Warning: preg_replace_callback(): Requires argument 2, 'word(\1)', to be a valid callback in /.php on line 54

Question

I have warning in php in this line

$text = preg_replace_callback('/LANG\[([0-9a-z_]*?)\]/e','word(\\1)',$read);

how to fix this issue

So do I have to remove it ? Because it was third party script not me I have built it — Yousef Abu Sallamah, Jun 25 '19 at 10:14

score 0 · Accepted Answer · answered Jun 25 '19 at 10:42

Matched group is passed to callback function by default. So your code should be like this.

$text = preg_replace_callback('/LANG\[([0-9a-z_]*?)\]/','word',$read);

In your callback you can access matched group like this.

function word($matches)
  {
   //$matches[0] will be while matched string
   //$matches[1] will be your first matched group
   }

/e flag was DEPRECATED in PHP 5.5.0, and REMOVED as of PHP 7.0.0

So, avoid using /e flag. For more information it's worth have look here

1 Answers1