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PHP debug_print_backtrace() Function

PHP Error Reference

Example

Print a PHP backtrace:

<?php
function a($txt) {
    b("Glenn");
}
function b($txt) {
    c("Cleveland");
}
function c($txt) {
    debug_print_backtrace();
}
a("Peter");
?>
Try it Yourself »

Definition and Usage

The debug_print_backtrace() function prints a PHP backtrace.

This function displays data from the code that led up to the debug_print_backtrace() function.


Syntax

debug_print_backtrace(options, limit);

Parameter Values

Parameter Description
options Optional. Specifies a bitmask for the following option: DEBUG_BACKTRACE_IGNORE_ARGS (Whether or not to omit the "args" index, and all the function/method arguments, to save memory)
limit Optional. Limits the number of stack frames printed. By default (limit=0) it prints all stack frames


Technical Details

Return Value: None
PHP Version: 5.0+
PHP Changelog: PHP 5.4: The optional parameter limit was added
PHP 5.3.6: The optional parameter options was added

PHP Error Reference