PHP Unconference Europe 2015

restore_exception_handler

(PHP 5)

restore_exception_handler Restores the previously defined exception handler function

Descrierea

bool restore_exception_handler ( void )

Used after changing the exception handler function using set_exception_handler(), to revert to the previous exception handler (which could be the built-in or a user defined function).

Valorile întoarse

This function always returns TRUE.

Exemple

Example #1 restore_exception_handler() example

<?php
    
function exception_handler_1(Exception $e)
    {
        echo 
'[' __FUNCTION__ '] ' $e->getMessage();
    }

    function 
exception_handler_2(Exception $e)
    {
        echo 
'[' __FUNCTION__ '] ' $e->getMessage();
    }

    
set_exception_handler('exception_handler_1');
    
set_exception_handler('exception_handler_2');

    
restore_exception_handler();

    throw new 
Exception('This triggers the first exception handler...');
?>

Exemplul de mai sus va afișa:

[exception_handler_1] This triggers the first exception handler...

Vedeți de asemenea

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User Contributed Notes 1 note

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rl7 at shinyblue dot net
8 months ago
Note that this does not work within an exception handler.

e.g.

<?php

function handler1(Exception $e) {
    echo
"handler1\n";
   
restore_exception_handler();
    throw
$e;
}
function
handler2(Exception $e) {
    echo
"handler2\n";
}

set_exception_handler( 'handler2' );
set_exception_handler( 'handler1' );

throw new
Exception( 'might expect to see handler1, handler2' );

/* Outputs:
handler1
PHP Fatal error:  Uncaught exception 'Exception' with message 'might expect to see handler1, handler2' in /tmp/demo.php:15
Stack trace:
#0 {main}
  thrown in /tmp/demo.php on line 15
*/

?>
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