PHP – Predefined Exceptions

PHP provides a robust mechanism for handling errors and exceptions through its built-in exception classes. These exceptions are organized in a hierarchical structure, making it easier to catch and handle specific types of errors.

Predefined Exceptions Class Tree

• Error (Implements Throwable)
  • ArithmeticError
    • DivisionByZeroError
  • AssertionError
  • CompileError
    • ParseError
  • TypeError
    • ArgumentCountError
  • ValueError
  • UnhandledMatchError
  • FiberError
• Exception (Implements Throwable)
  • ErrorException

Exception: Exception is the base class for all exceptions in PHP 5 and for all user exceptions in PHP 7.

Since PHP 7, Exception implements the Throwable interface.

Exception implements Throwable {
/* Properties */
protected string $message ;
protected int $code ;
protected string $file ;
protected int $line ;
/* Methods */
public __construct ([ string $message = "" [, int $code = 0 [, Throwable $previous = NULL ]]] )
final public getMessage ( void ) : string
final public getPrevious ( void ) : Throwable
final public getCode ( void ) : mixed
final public getFile ( void ) : string
final public getLine ( void ) : int
final public getTrace ( void ) : array
final public getTraceAsString ( void ) : string
public __toString ( void ) : string
final private __clone ( void ) : void
}

ErrorException: error exceptions

ErrorException extends Exception {
/* Properties */
protected int $severity ;
/* Inherited properties */
protected string $message ;
protected int $code ;
protected string $file ;
protected int $line ;
/* Methods */
public __construct ([ string $message = "" [, int $code = 0 [, int $severity = E_ERROR [, string $filename = __FILE__ [, int $lineno = __LINE__ [, Exception $previous = NULL ]]]]]] )
final public getSeverity ( void ) : int
/* Inherited methods */
final public Exception::getMessage ( void ) : string
final public Exception::getPrevious ( void ) : Throwable
final public Exception::getCode ( void ) : mixed
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
}

Error : is the basic class for error exceptions(PHP7)

Error implements Throwable {
/* Properties */
protected string $message ;
protected int $code ;
protected string $file ;
protected int $line ;
/* Methods */
public __construct ([ string $message = "" [, int $code = 0 [, Throwable $previous = NULL ]]] )
final public getMessage ( void ) : string
final public getPrevious ( void ) : Throwable
final public getCode ( void ) : mixed
final public getFile ( void ) : string
final public getLine ( void ) : int
final public getTrace ( void ) : array
final public getTraceAsString ( void ) : string
public __toString ( void ) : string
final private __clone ( void ) : void
}

ArgumentCountError: This exception is thrown when too few arguments are passed to a function or method. (Available since PHP 7.1.0)

ArgumentCountError extends TypeError {
/* Inherited properties */
protected string $message ;
protected int $code ;
protected string $file ;
protected int $line ;
/* Inherited methods */
final public Error::getMessage ( void ) : string
final public Error::getPrevious ( void ) : Throwable
final public Error::getCode ( void ) : mixed
final public Error::getFile ( void ) : string
final public Error::getLine ( void ) : int
final public Error::getTrace ( void ) : array
final public Error::getTraceAsString ( void ) : string
public Error::__toString ( void ) : string
final private Error::__clone ( void ) : void
}

ArithmeticError: It is thrown when an error occurs during mathematical operations.

ArithmeticError extends Error {
/* Métodos heredados */
final public Error::getMessage ( void ) : string
final public Error::getPrevious ( void ) : Throwable
final public Error::getCode ( void ) : mixed
final public Error::getFile ( void ) : string
final public Error::getLine ( void ) : int
final public Error::getTrace ( void ) : array
final public Error::getTraceAsString ( void ) : string
public Error::__toString ( void ) : string
final private Error::__clone ( void ) : void
}

AssertionError: It is thrown when an assertion made using assert() fails.

AssertionError extends Error {
/* Métodos heredados */
final public Error::getMessage ( void ) : string
final public Error::getPrevious ( void ) : Throwable
final public Error::getCode ( void ) : mixed
final public Error::getFile ( void ) : string
final public Error::getLine ( void ) : int
final public Error::getTrace ( void ) : array
final public Error::getTraceAsString ( void ) : string
public Error::__toString ( void ) : string
final private Error::__clone ( void ) : void
}

DivisionByZeroError: It is thrown when attempting to divide a number by zero.

DivisionByZeroError extends ArithmeticError {
/* Métodos heredados */
final public Error::getMessage ( void ) : string
final public Error::getPrevious ( void ) : Throwable
final public Error::getCode ( void ) : mixed
final public Error::getFile ( void ) : string
final public Error::getLine ( void ) : int
final public Error::getTrace ( void ) : array
final public Error::getTraceAsString ( void ) : string
public Error::__toString ( void ) : string
final private Error::__clone ( void ) : void
}

ParseError: It is thrown when an error occurs while parsing PHP code, such as when calling eval().

ParseError extends Error {
/* Métodos heredados */
final public Error::getMessage ( void ) : string
final public Error::getPrevious ( void ) : Throwable
final public Error::getCode ( void ) : mixed
final public Error::getFile ( void ) : string
final public Error::getLine ( void ) : int
final public Error::getTrace ( void ) : array
final public Error::getTraceAsString ( void ) : string
public Error::__toString ( void ) : string
final private Error::__clone ( void ) : void
}

TypeError: can be thrown for the following 3 reasons:

• The type of argument passed to a function does not match its corresponding declared parameter type.
• A value returned from a function does not match the declared return type of the function.
• When an invalid number of arguments is provided to a built-in PHP function (only in strict mode).

TypeError extends Error {
/* Métodos heredados */
final public Error::getMessage ( void ) : string
final public Error::getPrevious ( void ) : Throwable
final public Error::getCode ( void ) : mixed
final public Error::getFile ( void ) : string
final public Error::getLine ( void ) : int
final public Error::getTrace ( void ) : array
final public Error::getTraceAsString ( void ) : string
public Error::__toString ( void ) : string
final private Error::__clone ( void ) : void
}

References:

• php.net
• samuel comment https://www.jch-optimize.net/(page is a seo optimizer).

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