Turn off deprecated errors in PHP 5.3

You can do it in code by calling the following functions.

error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);

error_reporting(E_ALL ^ E_DEPRECATED);

php wordpress deprecation-warning

I needed to adapt this to

error_reporting = E_ALL & ~E_DEPRECATED

php wordpress deprecation-warning

To only get those errors that cause the application to stop working, use:

error_reporting(E_ALL ^ (E_NOTICE | E_WARNING | E_DEPRECATED));

This will stop showing notices, warnings, and deprecated errors.

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