PHP Basic
PHP HOMEPHP Intro
PHP Install
PHP Syntax
PHP Variables
PHP String
PHP Operators
PHP If...Else
PHP Switch
PHP Arrays
PHP While Loops
PHP For Loops
PHP Functions
PHP Forms
PHP $_GET
PHP $_POST
PHP Advanced
PHP DatePHP Include
PHP File
PHP File Upload
PHP Cookies
PHP Sessions
PHP E-mail
PHP Secure E-mail
PHP Error
PHP Exception
PHP Filter
PHP Database
MySQL IntroductionMySQL Connect
MySQL Create
MySQL Insert
MySQL Select
MySQL Where
MySQL Order By
MySQL Update
MySQL Delete
PHP ODBC
PHP XML
XML Expat ParserXML DOM
XML SimpleXML
PHP and AJAX
AJAX IntroAJAX PHP
AJAX Database
AJAX XML
AJAX Live Search
AJAX RSS Reader
AJAX Poll
PHP Reference
PHP ArrayPHP Calendar
PHP Date
PHP Directory
PHP Error
PHP Filesystem
PHP Filter
PHP FTP
PHP HTTP
PHP Libxml
PHP Mail
PHP Math
PHP Misc
PHP MySQL
PHP SimpleXML
PHP String
PHP XML
PHP Zip
PHP Quiz
PHP QuizPHP Certificate
PHP debug_backtrace() Function
Complete PHP Error Reference
Definition and Usage
The debug_backtrace() function generates a backtrace.
This function displays data from the code that led up to the debug_backtrace() function.
Returns an associative array. The possible returned elements are as follows:
| Name | Type | Description |
|---|---|---|
| function | string | The current function name |
| line | integer | The current line number |
| file | string | The current file name |
| class | string | The current class name |
| object | object | The current object |
| type | string | The current call type. Possible calls:
|
| args | array | If inside a function, this lists the functions arguments. If inside an included file, this lists the included file name |
Syntax
debug_backtrace()
Example
<?php
function one($str1, $str2)
{
two("Glenn", "Quagmire");
}
function two($str1, $str2)
{
three("Cleveland", "Brown");
}
function three($str1, $str2)
{
print_r(debug_backtrace());
}
one("Peter", "Griffin");
?>
function one($str1, $str2)
{
two("Glenn", "Quagmire");
}
function two($str1, $str2)
{
three("Cleveland", "Brown");
}
function three($str1, $str2)
{
print_r(debug_backtrace());
}
one("Peter", "Griffin");
?>
The output of the code above should be something like this:
Array
(
[0] => Array
(
[file] => C:\webfolder\test.php
[line] => 7
[function] => three
[args] => Array
(
[0] => Cleveland
[1] => Brown
)
)
[1] => Array
(
[file] => C:\webfolder\test.php
[line] => 3
[function] => two
[args] => Array
(
[0] => Glenn
[1] => Quagmire
)
)
[2] => Array
(
[file] => C:\webfolder\test.php
[line] => 14
[function] => one
[args] => Array
(
[0] => Peter
[1] => Griffin
)
)
)
(
[0] => Array
(
[file] => C:\webfolder\test.php
[line] => 7
[function] => three
[args] => Array
(
[0] => Cleveland
[1] => Brown
)
)
[1] => Array
(
[file] => C:\webfolder\test.php
[line] => 3
[function] => two
[args] => Array
(
[0] => Glenn
[1] => Quagmire
)
)
[2] => Array
(
[file] => C:\webfolder\test.php
[line] => 14
[function] => one
[args] => Array
(
[0] => Peter
[1] => Griffin
)
)
)
Complete PHP Error Reference
| WEB HOSTING |
|---|
| Best Web Hosting |
| PHP MySQL Hosting |
| Best Hosting Coupons |
| UK Reseller Hosting |
| Cloud Hosting |
| Top Web Hosting |
| $7.95/mo SEO Hosting |
| Premium Website Design |
| WEB BUILDING |
|---|
| XML Editor - Free Trial! |
| FREE Website BUILDER |
| Free Website Templates Free CSS Templates |
| Make Your Own Website |
| W3SCHOOLS EXAMS |
|---|
|
Get Certified in: HTML, CSS, JavaScript, XML, PHP, and ASP |
| W3SCHOOLS BOOKS |
|---|
|
New Books: HTML, CSS JavaScript, and Ajax |
| STATISTICS |
|---|
|
Browser Statistics Browser OS Browser Display |
| SHARE THIS PAGE |
|---|
W3Schools is optimized for learning, testing, and training. Examples might be simplified to improve reading and basic understanding.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.