调用函数并阻止被调用函数在PHP中执行重定向

Question

I'm calling a function which performs a redirect at the end. Can i prevent the function i called from performing a redirect somehow?

function a() {
    // here i would want to prevent the redirect. but i must call b always
    b();
    return 'a';
}

//function that i can't modify. It always redirects.
function b() {
    header("Location: http://google.com", true, 200 );
}

$return = a();

echo $return;
// expected output: 'a' not a redirect to google

If you ask why, i would not want to modify function b() as it's a library function.

Answer 1

After you've called the library function, try using

header_remove("Location")

http://php.net/manual/en/function.header-remove.php

Hopefully that header wouldn't have sent yet...