php 使用AJAX将google recaptcha添加到我们的表单中

Posted 2021-05-05

// add JS for homepage contact us form
function homepage_form_js(){
	if ( is_front_page() ){
		echo "<script language='javascript' type='text/javascript'>
            function ap_validate_is_multi_answered(multiSelectId) {
                if(typeof document.getElementById(multiSelectId) != 'undefined') {
                    var selectObj = document.getElementById(multiSelectId+'[]');
                    if((selectObj != null) && (selectObj.tagName == 'SELECT' || selectObj.tagName == 'select') && (selectObj.value.length > 0)) {
                        return true;
                    }
                    var inputs = document.getElementsByTagName('input');
                    var len = inputs.length;
                    for(var i=0;i<len;i++) {
                        if((inputs[i].id.indexOf(multiSelectId) != -1) && (inputs[i].selected == true || inputs[i].checked == true)) {
                            return true;
                        }
                    }
                }
                return false;
            }
 function ap_validate_9013() {
   if(typeof document.getElementById == 'undefined') {
       document.ap_form_9013.submit();
       return;
   }
   var form = document.ap_form_9013;
    if (form.name === \"\"){
      alert( \"There was an error on this form.\" );
    } else if (((typeof form.ap_field_67304 == 'undefined') || (typeof form.ap_field_67304.value == 'undefined')) && !ap_validate_is_multi_answered('ap_field_67304')) {
         alert( 'Please enter all required fields:  First Name');
    } else if ((typeof form.ap_field_67304 != 'undefined') && (typeof form.ap_field_67304.value != 'undefined') && (form.ap_field_67304.value === \"\")) {
         alert( \"Please enter all required fields: First Name \" );
    } else if (((typeof form.ap_field_67302 == 'undefined') || (typeof form.ap_field_67302.value == 'undefined')) && !ap_validate_is_multi_answered('ap_field_67302')) {
         alert( 'Please enter all required fields:  Email Address');
    } else if ((typeof form.ap_field_67302 != 'undefined') && (typeof form.ap_field_67302.value != 'undefined') && (form.ap_field_67302.value === \"\")) {
         alert( \"Please enter all required fields: Email Address \" );
    } else {
		var captcha = grecaptcha.getResponse();
		
		jQuery.ajax({
			url:'/wp-admin/admin-ajax.php',
			method:'POST',
			data: {action: \"send_captcha\", response:captcha}
		}).done(function(data, textStatus, jqXHR){
			data = jQuery.parseJSON(data);
			console.log(data);
			if ( data.success === true ) {
			document.ap_form_9013.submit();
			}
		});
      
    }
 }
 </script>";
	}
}

add_action('wp_footer', 'homepage_form_js');

function captchaAjax(){
		 $ch = curl_init(); 
		 
		$response = $_POST['response'];

		$secret = '6LfCMBUTAAAAABXlZCAqe3fECaNjad542WWMsavF';
		$postData = new stdClass();
		$postData->response = $response;
		$postData->secret = $secret;
		$url = "https://www.google.com/recaptcha/api/siteverify?" . http_build_query($postData);

        // set url 
        curl_setopt($ch, CURLOPT_URL, $url ); 

        //return the transfer as a string 
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
		
/* 		curl_setopt($ch, CURLOPT_POSTFIELDS,  $postData); */
		curl_setopt($ch, CURLOPT_HEADER, 0);
/* 		curl_setopt($ch, CURLOPT_POST, 1); */
		
        // $output contains the output string 
        $output = curl_exec($ch); 

        // close curl resource to free up system resources 
        curl_close($ch);

		// echo back response
		echo $output;
		
		wp_die();
	}

add_action('wp_ajax_send_captcha','captchaAjax');
add_action( 'wp_ajax_nopriv_send_captcha', 'captchaAjax' );