php调试利器_PHP教程

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]