DEBUG_PRINT_BACKTRACE(3) 1 DEBUG_PRINT_BACKTRACE(3)
debug_print_backtrace - Prints a backtrace
SYNOPSIS
void debug_print_backtrace ([int $options], [int $limit])
DESCRIPTION
debug_print_backtrace(3) prints a PHP backtrace. It prints the function calls, included/required files and eval(3)ed stuff.
PARAMETERS
o $options
- As of 5.3.6, this parameter is a bitmask for the following options:
debug_print_backtrace(3) options
+----------------------------+---------------------------------------------------+
|DEBUG_BACKTRACE_IGNORE_ARGS | |
| | |
| | Whether or not to omit the "args" index, and |
| | thus all the function/method arguments, to save |
| | memory. |
| | |
+----------------------------+---------------------------------------------------+
o $limit
- As of 5.4.0, this parameter can be used to limit the number of stack frames printed. By default ($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(3) 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(3).
PHP Documentation Group DEBUG_PRINT_BACKTRACE(3)