当前位置:Gxlcms > PHP教程 > PHPdebug_backtrace()函数

PHPdebug_backtrace()函数

时间:2021-07-01 10:21:17 帮助过:11人阅读

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
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
object 对象 当前对象
type 字符串 当前的调用类型,可能的调用: 返回: “->” - 方法调用返回: “::” - 静态方法调用返回 nothing - 函数调用
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

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

版权声明:本文为博主原创文章,未经博主允许不得转载。

人气教程排行