Question

我使用Server Side Validation

中的CORE PHP为Form编写了此代码

                if(empty($s_email)){
                $er = "Please enter E-mail";
                }else if(!preg_match("/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/i", $s_email)){
                $er="Email-ID is invalid!<br>";
                }else if(!filter_var($s_secemail, FILTER_VALIDATE_EMAIL)){
                $er="Secondary Email-ID is invalid!<br>";


               <p>
                  <label class="required" for="s_email">Email Address:</label><br/>
                                <input type="text" id="s_email" class="half" value="" name="s_email"/>
                            </p>

                            <p>
                                <label for="s_secemail">Secondary Email Address:</label><br/>
                                <input type="text" id="s_secemail" class="half" value="" name="s_secemail"/>
                            </p>

我的问题是，当我跳过$s_secemail字段时，我得到了这个消息 “辅助电子邮件ID无效”，非强制性

Answer 1

使用else if (!empty($s_secemail) && !filter_var($s_secemail, FILTER_VALIDATE_EMAIL))仅检查条件是否提供了$ s_secemail

Answer 2

您可以尝试这样做，只检查$s_secemail是valid email还是not，如果not empty为以下代码

if(empty($s_email)){
                    $er = "Please enter E-mail";
                    }else if(!preg_match("/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/i", $s_email)){
                    $er="Email-ID is invalid!<br>";
                    }else if(!empty($s_secemail) && !preg_match("/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/i", $s_secemail)){

                $er="Secondary Email-ID is invalid!<br>";

                    }


                   <p>
                      <label class="required" for="s_email">Email Address:</label><br/>
                                    <input type="text" id="s_email" class="half" value="" name="s_email"/>
                                </p>

                                <p>
                                    <label for="s_secemail">Secondary Email Address:</label><br/>
                                    <input type="text" id="s_secemail" class="half" value="" name="s_secemail"/>
                                </p>

Answer 3

我找到了实现服务器端验证的良好来源，因此我想分享 http://www.webexpertlabs.com/server-side-form-validation-using-regular-expression/

使用PHP脚本进行服务器端验证

3 个答案: