   #PHP Manual Error Handling and Logging Functions Error Handling and
   Logging Functions debug_print_backtrace

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                                debug_backtrace

   (PHP 4 >= 4.3.0)
   debug_backtrace --  Generates a backtrace

Description

   array debug_backtrace ( void )

   debug_backtrace() generates a PHP backtrace and returns this
   information as an associative array. The possible returned elements
   are listed in the following table:

   Table 1. Possible returned elements from debug_backtrace()
   Name Type Description
   function string The current function name. See also __FUNCTION__.
   line integer The current line number. See also __LINE__.
   file string The current file name. See also __FILE__.
   class string The current class name. See also __CLASS__
   type string The current class type.
   args array If inside a function, this lists the functions arguments.
   If inside an included file, this lists the included file name(s).

   The following is a simple example.

   Example 1. debug_backtrace() example
   // filename: a.php
   <?php
   function a_test($str) {
       echo "\nHi: $str";
       var_dump(debug_backtrace());
   }
   a_test('friend');
   ?>
   // filename: b.php
   <?php
   include_once '/tmp/a.php';
   ?>

   Results when executing /tmp/b.php:
Hi: friend
array(2) {
  [0]=>
  array(4) {
    ["file"] => string(10) "/tmp/a.php"
    ["line"] => int(10)
    ["function"] => string(6) "a_test"
    ["args"]=>
    array(1) {
      [0] => &string(6) "friend"
    }
  }
  [1]=>
  array(4) {
    ["file"] => string(10) "/tmp/b.php"
    ["line"] => int(2)
    ["args"] =>
    array(1) {
      [0] => string(10) "/tmp/a.php"
    }
    ["function"] => string(12) "include_once"
  }
}

   See also trigger_error() and debug_print_backtrace().
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