   #PHP Manual Operators Comparison Operators Execution Operators

             PHP Manual
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Error Control Operators

   PHP supports one error control operator: the at sign (@). When
   prepended to an expression in PHP, any error messages that might be
   generated by that expression will be ignored.

   If the track_errors feature is enabled, any error message generated by
   the expression will be saved in the variable $php_errormsg. This
   variable will be overwritten on each error, so check early if you want
   to use it.

   <?php
   /* Intentional file error */
   $my_file = @file ('non_existent_file') or
       die ("Failed opening file: error was '$php_errormsg'");
   // this works for any expression, not just functions:
   $value = @$cache[$key];
   // will not issue a notice if the index $key doesn't exist.
   ?>

     Note: The @-operator works only on expressions. A simple rule of
     thumb is: if you can take the value of something, you can prepend
     the @ operator to it. For instance, you can prepend it to
     variables, function and include() calls, constants, and so forth.
     You cannot prepend it to function or class definitions, or
     conditional structures such as if and foreach, and so forth.

   See also error_reporting() and the manual section for Error Handling
   and Logging functions.

     Note: The "@" error-control operator prefix will not disable
     messages that are the result of parse errors.

   Warning

   Currently the "@" error-control operator prefix will even disable
   error reporting for critical errors that will terminate script
   execution. Among other things, this means that if you use "@" to
   suppress errors from a certain function and either it isn't available
   or has been mistyped, the script will die right there with no
   indication as to why.
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