PHP debug_backtrace() 函数

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

For Example one:

 class Hello{
        private    $var;
        public     $var2;
        protected  $var3;

    public function __construct($var,$var2,$var3){
            $this->var=$var;
            $this->var2=$var2;
            $this->var3=$var3;
        } 
   }


function test(Hello $hello){
        echo "Hi this is a test function"."<br>";
        print_r(debug_backtrace());
}

$hello2=new Hello(‘A‘,‘B‘,‘C‘);
test($hello2);

实例One输出结果如下：

Hi this is a test function
Array ( [0] => Array (
[file] => D:\www\MyProjecttest\index4.php
[line] => 52
[function] => test
[args] => Array ( [0] => Hello Object ( [var:Hello:private] => A [var2] => B [var3:protected] => C ) ) ) )

注：在此只输出四个参数，分别是：file，line，function，args；

For Example Two:

class Hello{
        private    $var;
        public     $var2;
        protected  $var3;

   public function __construct($var,$var2,$var3)                   {
      $this->var=$var;
      $this->var2=$var2;
      $this->var3=$var3;
 } 

   function test(Hello $hello){
       echo "Hi this is a test function"."<br>";
       print_r(debug_backtrace());
   }
}

$hello2=new Hello(‘A‘,‘B‘,‘C‘);
$hello2->test($hello2);

实例Two输出结果如下：

Hi this is a test function
Array ( [0] => Array (
[file] => D:\www\MyProjecttest\index4.php
[line] => 54
[function] => test
[class] => Hello
[object] => Hello Object ( [var:Hello:private] => A [var2] => B [var3:protected] => C )
[type] => ->
[args] => Array ( [0] => Hello Object ( [var:Hello:private] => A [var2] => B [var3:protected] => C ) ) ) )

注：在此所有参数都输出了，分别是：file，line，function，class,object,type,args；