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The use of the @symbol of the PHP language

2019-11-22 02:04:37

label: PHP, at-symbol, Error Control Operator, Error suppression operator

The AT symbol @ is an error suppression operator in PHP. If an expression starts with @, the error message generated by this expression will be ignored. If track_errors is turned on, the error message generated by the expression will be saved to the variable $php_errormsg, which will be overwritten every time an error occurs.
// PHP

// Read File error.
$file_name = @file ('no_file_found') or die ("Failed to open the file. Error Message: '$errormsg'"); 
  
// Get value from array
// It will not display notice if the $key does not exist.
$value = @$arr[$key];

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