How to roll back to PHP 7

  • Hi,

    I would some advice on how to roll back to PHP 7 because a recent WP core update to version 4.7.3 has resulted in my NextGEN Gallery plugin generating the following warning…

    ‘Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in /data07/mysite/public_html/wp-includes/class-wp-hook.php on line 298’

    The plugin authors say that downgrading from PHP 7.1 to PHP 7 will stop the warning, but they don’t actually tell you how to do this!

    Can someone please advise on how to roll back to PHP 7?

    Many thanks

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  • Check in the control panel (e.g. cPanel) provided by your host. If there is no option to downgrade PHP then speak to your host about this.

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