Php/docs/function.debug-print-backtrace
debug_print_backtrace
(PHP 5, PHP 7)
debug_print_backtrace — Prints a backtrace
Description
debug_print_backtrace
([ int $options = 0
[, int $limit = 0
]] ) : void
debug_print_backtrace() prints a PHP backtrace. It prints the function calls, included/required files and eval()ed stuff.
Parameters
optionsAs of 5.3.6, this parameter is a bitmask for the following options:
debug_print_backtrace() options DEBUG_BACKTRACE_IGNORE_ARGS Whether or not to omit the "args" index, and thus all the function/method arguments, to save memory.
limitAs of 5.4.0, this parameter can be used to limit the number of stack frames printed. By default (
limit=0) it prints all stack frames.
Return Values
No value is returned.
Examples
Example #1 debug_print_backtrace() example
<?php// include.php filefunction a() { b();}function b() { c();}function c(){ debug_print_backtrace();}a();?>
<?php// test.php file// this is the file you should runinclude 'include.php';?>
The above example will output something similar to:
#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]
