PHP debug_backtrace() 函数
PHP Error 和 Logging 函数
定义和用法
PHP debug_backtrace() 函数生成一个 backtrace。
该函数返回一个关联数组。下面是可能返回的元素:
名称 | 类型 | 描述 |
---|---|---|
function | 字符串 | 当前的函数名。 |
line | 整数 | 当前的行号。 |
file | 字符串 | 当前的文件名。 |
class | 字符串 | 当前的类名 |
object | 对象 | 当前对象。 |
type | 字符串 | 当前的调用类型,可能的调用:
|
args | 数组 | 如果在函数中,列出函数参数。如果在被引用的文件中,列出被引用的文件名。 |
语法
debug_backtrace()
例子
<?php
function one($str1, $str2)
{
two("Glenn", "Quagmire");
}
function two($str1, $str2)
{
three("Cleveland", "Brown");
}
function three($str1, $str2)
{
print_r(debug_backtrace());
}
one("Peter", "Griffin");
?>
function one($str1, $str2)
{
two("Glenn", "Quagmire");
}
function two($str1, $str2)
{
three("Cleveland", "Brown");
}
function three($str1, $str2)
{
print_r(debug_backtrace());
}
one("Peter", "Griffin");
?>
输出:
Array
(
[0] => Array
(
[file] => C:\yige.org\test.php
[line] => 7
[function] => three
[args] => Array
(
[0] => Cleveland
[1] => Brown
)
)
[1] => Array
(
[file] => C:\yige.org\test.php
[line] => 3
[function] => two
[args] => Array
(
[0] => Glenn
[1] => Quagmire
)
)
[2] => Array
(
[file] => C:\yige.org\test.php
[line] => 14
[function] => one
[args] => Array
(
[0] => Peter
[1] => Griffin
)
)
)
(
[0] => Array
(
[file] => C:\yige.org\test.php
[line] => 7
[function] => three
[args] => Array
(
[0] => Cleveland
[1] => Brown
)
)
[1] => Array
(
[file] => C:\yige.org\test.php
[line] => 3
[function] => two
[args] => Array
(
[0] => Glenn
[1] => Quagmire
)
)
[2] => Array
(
[file] => C:\yige.org\test.php
[line] => 14
[function] => one
[args] => Array
(
[0] => Peter
[1] => Griffin
)
)
)
PHP Error 和 Logging 函数