debug_print_backtrace
(PHP 5, PHP 7, PHP 8)
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
-
options
-
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. -
limit
-
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 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'; ?>
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]
See Also
- debug_backtrace() - Generates a backtrace
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.debug-print-backtrace.php