php predefined exception

1.Exception

(PHP 5 >= 5.1.0)

Introduction

Exception is the base class of all exceptions.

Method

Exception::__construct — Exception constructor

Exception::getMessage — Get the exception message content

Exception::getPrevious — Return the previous exception in the exception chain

Exception::getCode — Get the exception code

Exception::getFile — Get the name of the program file where the exception occurred

Exception::getLine — Get the line number of the code in the file where the exception occurred

Exception::getTrace — Get the exception tracking information

Exception::getTraceAsString — Get Exception tracking information of string type

Exception::__toString — Convert exception object to string

Exception::__clone — Exception cloning

2.ErrorException

(PHP 5 >= 5.1.0)

Introduction

Error exception.

Example

Example #1 Use the set_error_handler() function to host error information to ErrorException

<?php
    function exception_error_handler($errno, $errstr, $errfile, $errline ) {
        throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
    }
    set_error_handler("exception_error_handler");
    /* Trigger exception */
    strpos();
?>

The output of the above routine is similar to:

Fatal error: Uncaught exception 'ErrorException' with message 'Wrong parameter count for strpos()' in /home/bjori/tmp/ex.php:8
Stack trace:
#0 [internal function]: exception_error_handler(2, 'Wrong parameter...', '/home/bjori/php...', 8, Array)
#1 /home/bjori/php/cleandocs/test.php(8): strpos()
#2 {main}
  thrown in /home/bjori/tmp/ex.php on line 8

method

ErrorException::__construct — exception constructor

ErrorException::getSeverity — Get exception severity