Title: [PHP Notice]Undefined index: QUERY_STRING
Last modified: July 17, 2019

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# [PHP Notice]Undefined index: QUERY_STRING

 *  [nic0tin](https://wordpress.org/support/users/nic0tin/)
 * (@nic0tin)
 * [6 years, 10 months ago](https://wordpress.org/support/topic/php-noticeundefined-index-query_string/)
 * Hi,
 * There’s a PHP Notice showing up when no query strings are present in URL.
    You
   can replace line [counter-core.php#L578](https://plugins.trac.wordpress.org/browser/count-per-day/trunk/counter-core.php#L578)`
   if (strpos($_SERVER['QUERY_STRING'], 'cpd_metaboxes') !== false )` by `if (strpos(
   $_SERVER['QUERY_STRING'] ?? '', 'cpd_metaboxes') !== false )`

The topic ‘[PHP Notice]Undefined index: QUERY_STRING’ is closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [nic0tin](https://wordpress.org/support/users/nic0tin/)
 * Last activity: [6 years, 10 months ago](https://wordpress.org/support/topic/php-noticeundefined-index-query_string/)
 * Status: not a support question