为什么override_function作为未定义的函数返回

Question

I run:

override_function('test_func', '$a, $b', 'print_r("new");');

and I get this error:

PHP Fatal error: Call to undefined function override_function()

I am using php 5.3.26

Answer 1

Function override_function is part of PECL Extension.

Configure PECL Here.