debug_print_backtrace

FunctionParams and return types changed in PHP 8.0

Prints a backtrace.

PHP 5
PHP 7.0
Improved
PHP 7.1-7.4
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

debug_print_backtrace Function synopsis

debug_print_backtrace(int $options = 0, int $limit = 0): void

Parameters

$options

OptionalTypeintDefault value0

This parameter is a bitmask for the following options:

$options accepts the following constant value

$limit

OptionalTypeintDefault value0

This parameter can be used to limit the number of stack frames printed. By default ($limit=0) it prints all stack frames.

Return value

The debug_print_backtrace function is a void function; it does not return any values.

Changes to the debug_print_backtrace Function

PHP 8.0

  • Return type added: void
  • Parameter type added for parameter #1 ($options): int
  • Parameter default value added for position #1 ($options): 0
  • Parameter type added for parameter #2 ($limit): int
  • Parameter default value added for position #2 ($limit): 0
- debug_print_backtrace($options, $limit)
+ debug_print_backtrace(int $options = 0, int $limit = 0): void

PHP 7.0

  • Optional parameter added - #2: $limit
- debug_print_backtrace($options)
+ debug_print_backtrace($options, $limit)

debug_print_backtrace Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes