Podręcznik PHP
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# debug_backtrace

(PHP 4 >= 4.3.0)

debug_backtrace -- Generates a backtrace

## Description

array debug_backtrace ( void )

debug_backtrace() generates a PHP backtrace and returns this information as an associative array. The possible returned elements are listed in the following table:

Tabela 1. Possible returned elements from debug_backtrace()

Name | Type | Description
--- | --- | ---
function | string | The current function name. See also __FUNCTION__.
line | integer | The current line number. See also __LINE__.
file | string | The current file name. See also __FILE__.
class | string | The current class name. See also __CLASS__
type | string | The current call type. If a method call, "->" is returned. If a static method call, "::" is returned. If a function call, nothing is returned.
args | array | If inside a function, this lists the functions arguments. If inside an included file, this lists the included file name(s).

The following is a simple example.

Przykład 1. debug_backtrace() example
`// filename: a.php <?php function a_test($str) { echo "\nHi: $str"; var_dump(debug_backtrace()); } a_test('friend'); ?> // filename: b.php <?php include_once '/tmp/a.php'; ?>`
Results when executing `/tmp/b.php`:
    Hi: friend
    array(2) {
      [0]=>
      array(4) {
        ["file"] => string(10) "/tmp/a.php"
        ["line"] => int(10)
        ["function"] => string(6) "a_test"
        ["args"]=>
        array(1) {
          [0] => &string(6) "friend"
        }
      }
      [1]=>
      array(4) {
        ["file"] => string(10) "/tmp/b.php"
        ["line"] => int(2)
        ["args"] =>
        array(1) {
          [0] => string(10) "/tmp/a.php"
        }
        ["function"] => string(12) "include_once"
      }
    }

See also trigger_error() and debug_print_backtrace().

Poprzedni | Spis treści | Następny
Error Handling and Logging Functions | Początek rozdziału | debug_print_backtrace