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PHP | debug_backtrace() Function

PHP debug_backtrace() Function

Hello folks! welcome back to a new section of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP debug_backtrace() Function.

The built-in PHP debug_backtrace() function is used to return an associative array. The possible returned elements are as follows -

functionstringThe current function name.
lineintegerThe current line number.
filestringThe current file name.
classstringThe current class name.
objectstringThe current Object.
typestringThe current call type. If a method call, "->" is returned. If a static method call, "::" is returned. If a function call, nothing is returned.
argarrayIf inside a function, this lists the functions arguments. If inside an included file, this lists the included file name(s).


Following below is the syntax to use this function -

array debug_backtrace ( void );

Parameter Details

Sr.NoParameter & Description



Return Value

This built-in function returns an associative array.


Try out the below example -

   function printStr($str) {
      echo "Hi: $str";


When the above code is executed, it will produce the following result -

Hi: helloarray(1) {
   array(4) {
      ["file"]=> string(36) "/var/www/webdesigntutorialz/php/test.php"
      ["line"]=> int(8)
      ["function"]=> string(8) "printStr"
      ["args"]=> array(1) {
         &string(6) "hello"

Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial guide, we are going to be discussing about the PHP debug_print_backtrace() Function.

Do feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

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Thanks for reading and bye for now.

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