PHP Debug_backtrace () function

The PHP debug_backtrace () function generates a BackTrace

the function returns an associative array .

下面是可能返回的元素

function	string	the current function name
Line	Integer	The current line number
File	String	The current file name
Object	Object	Current Object
Type	String	Current invocation type, possible invocation: return: "-"-Method call Returns: "::"-static method call returns Nothing-function call
Args	Array	If the function parameter is listed in the function. If the referenced file name is listed in the referenced files

For Example One:

  class Hello{        Private    $var; Public     $var 2;protected  $var 3; Public  function __construct($var,$var 2,$var 3){             $this-var=$var;$this->var2=$var 2;$this->var3=$var 3; }    } function test(Hello $hello){        Echo "Hi This is a test function"."<br>"; Print_r (Debug_backtrace ());}$hello 2=NewHello (' A ',' B ',' C '); Test ($hello 2);

The example one outputs the following results:

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))))

Note: Only four parameters are output here: File,line,function,args;

For Example:

 class Hello{        Private    $var; Public     $var 2;protected  $var 3; Public  function __construct($var,$var 2,$var 3) {
           $this-var=$var;$this->var2=$var 2;$this->var3=$var 3; } function test(Hello $hello){       Echo "Hi This is a test function"."<br>";   Print_r (Debug_backtrace ()); }}$hello 2=NewHello (' A ',' B ',' C ');$hello 2->test ($hello 2);

The result of the example output is as follows:

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))))

Note: In this all parameters are output, respectively: File,line,function,class,object,type,args;

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PHP Debug_backtrace () function