PHP debug_backtrace function

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debug_backtrace

(PHP 4 >= 4.3.0, PHP 5)

debug_backtrace — Generates a backtraceDescriptionarray debug_backtrace ( void )

debug_backtrace() generates a PHP backtrace.

Return Values

Returns an associative array. The possible returned elements
are as follows:

Table 1. Possible returned elements from debug_backtrace()

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__
objectobject The current object.
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).

ChangeLog

VersionDescription5.1.1 Added the current object as a possible return element.

Examples

Example 1. debug_backtrace() example

Results similar to the following 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()debug_print_backtrace()