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PHP Tutorial

PHP error handling functions - debug_print_backtrace()

Introduction 

The debug_print_backtrace() function prints a backtrace which may contain function calls, included/required files and eval()ed.

Version:

PHP 4,5

Syntax:

debug_print_backtrace (void)

Parameters:

debug_print_backtrace function does not have any parameters.

Return Values:

debug_print_backtrace function does not have any return value.

Example:

<?php
function w3r_html() {
    w3r_php();
}
function w3r_php() {
    w3r_mysql();
}
function w3r_mysql(){
    debug_print_backtrace();
}
w3r_html();
?>

The above code displays this output :

#0 w3r_mysql() called at [C:\Program Files\Apache Software
Foundation\Apache2.2\htdocs\php\debug-print-backtrace-example.php:7]
#1 w3r_php() called at [C:\Program Files\Apache Software
Foundation\Apache2.2\htdocs\php\debug-print-backtrace-example.php:3]
#2 w3r_html() called at [C:\Program Files\Apache Software
Foundation\Apache2.2\htdocs\php\debug-print-backtrace-example.php:13]>

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