IP 反查方式
1 2 3 4 | if (preg_match( '~^(?:.+[.])?paypal[.]com$~' , gethostbyaddr ( $_SERVER [ 'REMOTE_ADDR' ])) > 0) { // called from paypal } |
1 2 3 4 | if (preg_match( '~^(?:.+[.])?paypal[.]com$~' , gethostbyaddr ( $_SERVER [ 'REMOTE_ADDR' ])) > 0) { // called from paypal } |