debug_backtrace
Generates a backtrace
Descriptionarraydebug_backtracedebug_backtrace generates a PHP backtrace
and returns this information as an associative array. The
possible returned elements are listed in the following table:
Possible returned elements from <function>debug_backtrace</function>NameTypeDescriptionfunctionstring
The current function name. See also
__FUNCTION__.
lineinteger
The current line number. See also
__LINE__.
filestring
The current file name. See also
__FILE__.
classstring
The current class name. See also
__CLASS__
typestring
The current call type. If a method call, "->" is returned. If a static
method call, "::" is returned. If a function call, nothing is returned.
argsarray
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.
<function>debug_backtrace</function> example
]]>
Results 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"
}
}
]]>
See also trigger_error and
debug_print_backtrace.