Prints a backtrace (original) (raw)
debug_print_backtrace
(PHP 5, PHP 7)
debug_print_backtrace — Prints a backtrace
Description
debug_print_backtrace ([ int $options = 0 [, int $limit = 0 ]] ) : void
Parameters
options
As 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. |
|---|
limit
As 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.
Changelog
| Version | Description |
|---|---|
| 5.4.0 | Added the optional parameter limit. |
| 5.3.6 | Added the optional parameter options. |
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]