wordpress - the best way to hide / customize this php error -

i have code works fine

$done_getting = file_get_contents($url);  if($done_getting == !null) {     return $done_getting; } else {      return $custom_error_msg; }

if i'm online fetches $url , displays on page, in event of slow internet connection or offline

warning: file_get_contents(url ): failed open stream: http request failed! in xxxxxx

this correct error msg php , how customise msg instead of getting 1 tells user root files are.

is possible customise it.

i using in wordpress(debug mode). code above works too, when there error returns $custom_error_msg after showing default php error.

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