In PHP, the role of the '@' prefix is ​​to suppress error reporting

The '@' symbol prevents errors from being displayed on the screen.

PHP supports the error control operator, the symbol (@). When it is prepended to a PHP expression, error messages that may be generated using this expression will be ignored.

If the track_errors attribute is enabled, the error messages generated by this expression will be saved in a variable named $php_errormsg. This variable is overwritten every time an error occurs.

It is recommended to write code related to error status/condition.

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