debug_backtrace Generates a backtrace &reftitle.description; arraydebug_backtrace intoptionsDEBUG_BACKTRACE_PROVIDE_OBJECT intlimit0 debug_backtrace generates a PHP backtrace. &reftitle.parameters; options This parameter is a bitmask for the following options: DEBUG_BACKTRACE_PROVIDE_OBJECT Whether or not to populate the "object" index. DEBUG_BACKTRACE_IGNORE_ARGS Whether or not to omit the "args" index, and thus all the function/method arguments, to save memory. There are four possible combinations: debug_backtrace() Populates both indexes debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT) debug_backtrace(1) debug_backtrace(0) Omits index "object" and populates index "args". debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS) Omits index "object" and index "args". debug_backtrace(2) debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT|DEBUG_BACKTRACE_IGNORE_ARGS) Populate index "object" and omit index "args". debug_backtrace(3) limit This parameter can be used to limit the number of stack frames returned. By default (limit=0) it returns all stack frames. &reftitle.returnvalues; Returns an array of associative arrays. The possible returned elements are as follows: &Name; &Type; &Description; function string The current function name. See also __FUNCTION__. line int 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__ object object The current object. type string The current call type. If a method call, "->" is returned. If a static method call, "::" is returned. If a function call, nothing is returned. args array If inside a function, this lists the functions arguments. If inside an included file, this lists the included file name(s). &reftitle.examples; ]]> Results similar to the following when executing /tmp/b.php: 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" } } ]]> &reftitle.seealso; trigger_error debug_print_backtrace