PHP Recaptcha Form only Works with IP Address instead of www.google.com

Question

As mentioned in the title. My recaptcha form only works if I change this:

define("RECAPTCHA_VERIFY_SERVER", "www.google.com");

to this:

define("RECAPTCHA_VERIFY_SERVER", "74.125.236.178");

I am using myhosting.com vps linux server. Any idea why it doesn't work with www.google.com ?

Answer 1

Fix to this problem is,

//line 40 in recpatchalib.php and replace:
define("RECAPTCHA_VERIFY_SERVER", "api-verify.recaptcha.net");

// With this:
define("RECAPTCHA_VERIFY_SERVER", gethostbyname('api-verify.recaptcha.net'));

Try it.

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