[Exeption] Custom Exceptions #php #class #errorhandling

Exception.php

<?php

/* ------------------------------------------------------- */
/* [Exeption] Custom Exceptions #php #class #errorhandling */
/* ------------------------------------------------------- */

interface IException {
/* Protected methods inherited from Exception class */
    public function getMessage();                 // Exception message
    public function getCode();                    // User-defined Exception code
    public function getFile();                    // Source filename
    public function getLine();                    // Source line
    public function getTrace();                   // An array of the backtrace()
    public function getTraceAsString();           // Formated string of trace
    /* Overrideable methods inherited from Exception class */
    public function __toString();                 // formatted string for display
    public function __construct($message = null, $code = 0);
}

class CustomException extends Exception implements IException {
    protected $message = 'Unknown exception';     // Exception message
    private   $string;                            // Unknown
    protected $code    = 0;                       // User-defined exception code
    protected $file;                              // Source filename of exception
    protected $line;                              // Source line of exception
    private   $trace;                             // Unknown

    public function __construct($message = null, $code = 0) {
        if (!$message) {
            throw new $this('Unknown exception '. get_class($this));
        }
        parent::__construct($message, $code);
    }

    public function __toString(){
        die( get_class($this) . $this->message .
             ' in ' . $this->file .  '(' . $this->line . ')' . PHP_EOL . 
             $this->getTraceAsString()
        );
    }
}