[php] 调试利器

如果我们想知道某个方法被谁调用了?  debug_print_backtrace可以解决!~

测试代码

<?php
class a{
    function say($msg) {
        echo "msg:".$msg;
        echo "<pre>";debug_print_backtrace();
    }
}

class b {
    function say($msg) {
        $a = new a();
        $a->say($msg);
    }
}

class c {
    function __construct($msg) {
        $b = new b();
        $b->say($msg);
    }
}

$c = new c("test");

输出结果

msg:test
#0  a->say(test) called at [/var/www/test/test0723.php:12]
#1  b->say(test) called at [/var/www/test/test0723.php:19]
#2  c->__construct(test) called at [/var/www/test/test0723.php:23]

相关链接

http://ch2.php.net/manual/zh/function.debug-print-backtrace.php

http://ch2.php.net/manual/zh/function.debug-backtrace.php