[英]PHP, distinguish between internal and external class method call
Can't get my head around this, is there any way to check if a method was called internally? 我无法解决这个问题,是否有任何方法可以检查内部是否调用了方法? By this I mean a traceback to check if it was called by $this and not a pointer to the instance.
我的意思是回溯,以检查它是否被$ this调用,而不是实例的指针。 Kind of like the concept of private function but only function is public?
有点像私有功能的概念,但只有功能是公共的?
<?php
class Foo {
public function check () {
/*
if invoked by $this (internally)
return true
else
return false
*/
}
public function callCheck () {
/* returns true because its called by $this */
return $this->check();
}
}
$bar = new Foo;
// this should return false because we are calling it from an instance
$bar->check();
// where as this will return true
$bar->callCheck();
?>
Maybe this is undo-able but I really need it for my project at university? 也许这是可以撤消的,但是我在大学的项目中确实需要它吗? Anyone come across a solution or knows how I would identify a solution.
任何人遇到解决方案或知道我将如何确定解决方案。
Thanks. 谢谢。
Below solution does not work. 以下解决方案不起作用。
You could use debug_backtrace but it will be slow. 您可以使用debug_backtrace,但是会很慢。 I really advise you find a different way to solve the problem you are trying to overcome.
我真的建议您找到另一种方法来解决您要克服的问题。
<?php
public function check() {
$trace = debug_backtrace();
if ($trace[1]['class'] == 'MyClassName') {
return true;
}
return false;
}
if you there is a call $bar->callCheck(); 如果有电话,则$ bar-> callCheck(); control exits from function check();
控制从函数check()退出;
first it go to callCheck() then after it goest to check() and return from there 首先去callCheck()然后再去check()然后从那里返回
debug_backtrace(); debug_backtrace(); should work.
应该管用。 place the debug_backtrace();
放置debug_backtrace(); inside check() method.
内部check()方法。
do this: 做这个:
$t = debug_backtrace(); $ t = debug_backtrace(); var_dump($t);
var_dump($ t);
from here you should check $t['function'] and $t['class'], combine those 2 , you should find out is a call, external or internal. 从这里,您应该检查$ t ['function']和$ t ['class'],将这2结合起来,您应该发现是外部调用还是内部调用。
here is out put from my machine, php version is 5.2.14. 这是从我的机器上放出来的,php版本是5.2.14。
array(1) {
[0]=>
array(7) {
["file"]=>
string(15) "C:\php\test.php"
["line"]=>
int(24)
["function"]=>
string(5) "check"
["class"]=>
string(3) "Foo"
["object"]=>
object(Foo)#1 (0) {
}
["type"]=>
string(2) "->"
["args"]=>
array(0) {
}
}
}
array(2) {
[0]=>
array(7) {
["file"]=>
string(15) "C:\php\test.php"
["line"]=>
int(18)
["function"]=>
string(5) "check"
["class"]=>
string(3) "Foo"
["object"]=>
object(Foo)#1 (0) {
}
["type"]=>
string(2) "->"
["args"]=>
array(0) {
}
}
[1]=>
array(7) {
["file"]=>
string(15) "C:\php\test.php"
["line"]=>
int(26)
["function"]=>
string(9) "callCheck"
["class"]=>
string(3) "Foo"
["object"]=>
object(Foo)#1 (0) {
}
["type"]=>
string(2) "->"
["args"]=>
array(0) {
}
}
}
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