debug_backtrace
(PHP 4 >= 4.3.0, PHP 5)
debug_backtrace — Generates a backtrace
Описание
array debug_backtrace
([ bool $provide_object
] )
debug_backtrace() generates a PHP backtrace.
Возвращаемые значения
Returns an associative array. The possible returned elements are as follows:
| Name | Type | Description |
|---|---|---|
| function | string | The current function name. See also __FUNCTION__. |
| line | integer | The current line number. See also __LINE__. |
| file | string | The current file name. See also __FILE__. |
| class | string | The current class name. See also __CLASS__ |
| object | object | The current object. |
| type | string | The current call type. If a method call, "->" is returned. If a static method call, "::" is returned. If a function call, nothing is returned. |
| args | array | If inside a function, this lists the functions arguments. If inside an included file, this lists the included file name(s). |
Список изменений
| Версия | Описание |
|---|---|
| 5.2.5 | Added the optional parameter provide_object . |
| 5.1.1 | Added the current object as a possible return element. |
Примеры
Пример #1 debug_backtrace() example
<?php
// filename: a.php
function a_test($str)
{
echo "\nHi: $str";
var_dump(debug_backtrace());
}
a_test('friend');
?>
<?php
// filename: b.php
include_once '/tmp/a.php';
?>
Results similar to the following 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" } }
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