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UnderflowException ?
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PHP Manual
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The RuntimeException class
The RuntimeException class
(PHP 5 >= 5.1.0, PHP 7)
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Exception thrown if an error which can only be found on runtime occurs.
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RuntimeException
extends
Exception
{
/* �̳е����� */
protected
string
$
message
;
protected
int
$
code
;
protected
string
$
file
;
protected
int
$
line
;
/* �̳еķ��� */
final
public
Exception::getMessage
(
void
) :
string
final
public
Exception::getPrevious
(
void
) :
Throwable
final
public
Exception::getCode
(
void
) :
int
final
public
Exception::getFile
(
void
) :
string
final
public
Exception::getLine
(
void
) :
int
final
public
Exception::getTrace
(
void
) :
array
final
public
Exception::getTraceAsString
(
void
) :
string
public
Exception::__toString
(
void
) :
string
final
private
Exception::__clone
(
void
) :
void
}