How do I fix this error in PHP: "A non well formed numeric value encountered" [duplicate]

Question

Possible Duplicate:
A non well formed numeric value encountered

Why doesn't this work?

echo gmdate('Y-m-d H:i:s',strtotime('+7 days','2035-01-01 00:00:00'));

The error I see is:

A non well formed numeric value encountered

Knight

I think you should consider the answer given here : https://mcmap.net/q/150960/-a-non-well-formed-numeric-value-encountered – Sorayasorb

The link to a possible duplicate isn't valid. Nothing at that link helps me. – Knight

Answer 1

The second parameter of strtotime expects a timestamp, not a string. See the manual on strtotime.

You can use strtotime again on your second parameter to get what you want:

echo gmdate('Y-m-d H:i:s',strtotime('+7 days',strtotime('2035-01-01 00:00:00')));

Abacus

Finally, I looked at at least 10 answers to this problem, no one else explained the need to convert it to a timestamp before using strtotime() again. – Harvin