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php 7.4 and php 8.1

 
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GrowExx
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Joined: 06 Mar 2023
Posts: 2
PostPosted: Mon Mar 06, 2023 7:53 am    Post subject: php 7.4 and php 8.1 Reply with quote
When I run my script in PHP 7.4, it is smooth and perfect.
but same gives the error when I run in PHP 8.1

Web page says:
Sorry, Image Validation Failed!

Error log says:
PHP Warning: Undefined variable $msg in /home/xxx.php on line nn

Any suggestion?
Thanks
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admin
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Joined: 03 Mar 2002
Posts: 1306
PostPosted: Sat Mar 18, 2023 5:26 pm    Post subject: Re: php 7.4 and php 8.1 Reply with quote
GrowExx,

When you use a variable that has not been defined, you get a warning in PHP 8 while PHP 7 was silently accepting that and considering it as empty.

https://wiki.php.net/rfc/undefined_variable_error_promotion
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