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debug_print_backtrace

(PHP 5)

debug_print_backtrace --  Prints a backtrace

Описание

void debug_print_backtrace ( void )

debug_print_backtrace() prints a PHP backtrace. It prints the function calls, included/required files and eval()ed stuff.

Список параметров

This function has no parameters.

Возвращаемые значения

Эта функция не возвращает значения после выполнения.

Примеры

Пример 1. debug_print_backtrace() example

<?php
// include.php file

function a() {
   
b();
}

function
b() {
   
c();
}

function
c(){
   
debug_print_backtrace();
}

a();

?>


<?php
// test.php file
// this is the file you should run

include 'include.php';
?>

Результатом выполнения данного примера будет что-то подобное:

#0  eval() called at [/tmp/include.php:5]
#1  a() called at [/tmp/include.php:17]
#2  include(/tmp/include.php) called at [/tmp/test.php:3]

#0  c() called at [/tmp/include.php:10]
#1  b() called at [/tmp/include.php:6]
#2  a() called at [/tmp/include.php:17]
#3  include(/tmp/include.php) called at [/tmp/test.php:3]

Смотрите также

debug_backtrace()



error_get_last> <debug_backtrace
Last updated: Sat, 27 Jan 2007
 
add a note add a note User Contributed Notes
debug_print_backtrace
taner
21-Aug-2007 04:52
bortuzar: a simpler version, w/o output buffering:

<?php

$query
= sprintf("INSERT INTO EventLog (Trace) VALUES ('%s')",
   
mysql_real_escape_string(join("\n", debug_backtrace())) );
mysql_query($query);

?>
bortuzar at gmail dot com
05-Jun-2007 11:23
If you want to get the trace into a variable or DB, I suggest to do the following:

<?php
    ob_start
();
       
debug_print_backtrace();
   
$trace = ob_get_contents();
   
ob_end_clean();

$query = sprintf("INSERT INTO EventLog (Trace) VALUES ('%s')",
           
mysql_real_escape_string($trace));
mysql_query($query);
?>
petermarkellis at googlemail dot com
28-Mar-2007 03:10
A cleaner example:
<?php
function a() {
  
b();
}

function
b() {
  
c();
}

function
c(){
  
debug_print_backtrace();
}

a();

?>

outputs:
#0  c() called at [C:\debugbacktracetest.php:7]
#1  b() called at [C:\debugbacktracetest.php:3]
#2  a() called at [C:\debugbacktracetest.php:14]
aidan at php dot net
15-Mar-2005 01:47
This functionality is now implemented in the PEAR package PHP_Compat.

More information about using this function without upgrading your version of PHP can be found on the below link:

http://pear.php.net/package/PHP_Compat

error_get_last> <debug_backtrace
Last updated: Sat, 27 Jan 2007
 
 
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