@ 2013-09-20T21:30:52Z <?php
class Exception
{
protected $message = 'Unknown exception'; // exception message
private $string; // __toString cache
protected $code = 0; // user defined exception code
protected $file; // source filename of exception
protected $line; // source line of exception
private $trace; // backtrace
private $previous; // previous exception if nested
function __construct($message = null, $code = 0, Exception $previous = null)
{
// make sure everything is assigned properly
self::__construct($message, $code, $previous);
}
// Overrideable;
}
// Overrideable
class MyException extends Exception{
public function __construct($message, $code = 0, Exception $previous = null) {
// some code
// make sure everything is assigned properly
parent::__construct($message, $code, $previous);
}
// custom string representation of object
public function __toString() {
return __CLASS__ . ": [{$this->code}]: {$this->message}\n";
}
public function customFunction() {
echo "A custom function for this type of exception\n";
}
}
class TestException
{
public $var;
const THROW_NONE = 0;
const THROW_CUSTOM = 1;
const THROW_DEFAULT = 2;
function __construct($avalue = self::THROW_NONE) {
switch ($avalue) {
case self::THROW_CUSTOM:
// throw custom exception
throw new MyException('1 is an invalid parameter', 5);
break;
case self::THROW_DEFAULT:
// throw default one.
throw new Exception('2 is not allowed as a parameter', 6);
break;
default:
// No exception, object will be created.
$this->var = $avalue;
break;
}
}
}
// Example 1
try {
$o = new TestException(TestException::THROW_CUSTOM);
} catch (MyException $e) { // Will be caught
echo "Caught my exception\n", $e;
$e->customFunction();
} catch (Exception $e) { // Skipped
echo "Caught Default Exception\n", $e;
}
// Continue execution
var_dump($o); // Null
echo "\n\n";
// Example 2
try {
$o = new TestException(TestException::THROW_DEFAULT);
} catch (MyException $e) { // Doesn't match this type
echo "Caught my exception\n", $e;
$e->customFunction();
} catch (Exception $e) { // Will be caught
echo "Caught Default Exception\n", $e;
}
// Continue execution
var_dump($o); // Null
echo "\n\n";
try {
$o = new TestException(TestException::THROW_CUSTOM);
} catch (Exception $e) { // Will be caught
echo "Default Exception caught\n", $e;
}
// Continue execution
var_dump($o); // Null
echo "\n\n";
// Example 4
try {
$o = new TestException();
} catch (Exception $e) { // Skipped, no exception
echo "Default Exception caught\n", $e;
}
// Continue execution
var_dump($o); // TestException?>
echo "p\n\n";
?>
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Output for 7.0.0 - 7.0.20 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.27 , 8.2.0 - 8.2.17 , 8.3.0 - 8.3.4 Fatal error: Cannot declare class Exception, because the name is already in use in /in/uQSRR on line 2
Process exited with code 255 . Output for 5.3.28 - 5.3.29 , 5.4.20 - 5.4.45 , 5.5.24 - 5.5.35 , 5.6.7 - 5.6.28 Fatal error: Cannot redeclare class Exception in /in/uQSRR on line 3
Process exited with code 255 . Output for 5.2.0 - 5.2.17 , 5.3.0 - 5.3.27 , 5.4.0 - 5.4.19 Fatal error: Cannot redeclare class Exception in /in/FCMCD on line 3
Process exited with code 255 . Output for 5.0.0 - 5.0.5 , 5.1.0 - 5.1.6 Fatal error: Cannot redeclare class exception in /in/FCMCD on line 3
Process exited with code 255 . Output for 4.4.2 - 4.4.9 Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/FCMCD on line 4
Process exited with code 255 . Output for 4.3.1 , 4.3.5 - 4.3.11 , 4.4.0 - 4.4.1 Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/FCMCD on line 4
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/FCMCD on line 4
Process exited with code 255 . Output for 4.3.0 Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/uQSRR on line 4
Process exited with code 255 . preferences:dark mode live preview
266.9 ms | 401 KiB | 355 Q