wap 参数错误，请修改

[chunjingqiu]

$parameter = array( 'service' => $this->service, 'partner' => $this->partner, 'payment_type' => $this->payment_type, 'notify_url' => $this->notify_url, 'return_url' => $this->return_url, 'seller_id' => $this->partner, 'out_trade_no' => $this->out_trade_no, 'subject' => $this->subject, 'total_fee' => $this->total_fee, 'body' => $this->body, 'it_b_pay' => $this->it_b_pay, 'show_url' => $this->show_url, 'exter_invoke_ip' => $this->exter_invoke_ip, 'app_pay' => $this->app_pay, '_input_charset' => strtolower($this->_input_charset), ); 改成这样后，手机网页端就可以支付了，没有APP会是网页端支付宝，有APP就唤醒