<button id="bags5"></button><var id="bags5"><dl id="bags5"></dl></var>
    <bdo id="bags5"></bdo>
    <abbr id="bags5"></abbr>

    <nobr id="bags5"><strong id="bags5"></strong></nobr>

      \n
      \n Name:
      \n E-mail:
      \n \n <\/form>\n<\/body>\n<\/html><\/pre>\n\n

      welcome.php
      \n<\/p>\n\n

      \n\n
      

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      \n\n\nWelcome <?php echo $_POST[\"name\"]; ?>
      \nYour email address is: <?php echo $_POST[\"email\"]; ?>\n\n<\/body>\n<\/html>\n<\/pre>\n\n

      2. Complete example of PHP form verification
      \n<\/strong><\/p>\n\n

      \n\n\n<\/head>\n \n\n<?php\n\/\/ 定義變量并設(shè)置為空值\n$nameErr = $emailErr = $websiteErr = \"\";\n$name = $email = $website = \"\";\n\nif ($_SERVER[\"REQUEST_METHOD\"] == \"POST\") {\n  if (empty($_POST[\"name\"])) {\n   $nameErr = \"姓名是必填的\";\n  } else {\n   $name = test_input($_POST[\"name\"]);\n   \/\/ 檢查姓名是否包含字母和空白字符\n   \/\/preg_match() 函數(shù)檢索字符串的模式,如果模式存在則返回 true,否則返回 false。\n   if (!preg_match(\"\/^[a-zA-Z ]*$\/\",$name)) {\n    $nameErr = \"只允許字母和空格\"; \n   }\n  }\n  \n  if (empty($_POST[\"email\"])) {\n   $emailErr = \"電郵是必填的\";\n  } else {\n   $email = test_input($_POST[\"email\"]);\n   \/\/ 檢查電子郵件地址語法是否有效\n   if (!preg_match(\"\/([\\w\\-]+\\@[\\w\\-]+\\.[\\w\\-]+)\/\",$email)) {\n    $emailErr = \"無效的 email 格式\"; \n   }\n  }\n   \n  if (empty($_POST[\"website\"])) {\n   $website = \"\";\n  } else {\n   $website = test_input($_POST[\"website\"]);\n   \/\/ 檢查 URL 地址語法是否有效(正則表達(dá)式也允許 URL 中的斜杠)\n   if (!preg_match(\"\/\\b(?:(?:https?|ftp):\\\/\\\/|www\\.)[-a-z0-9+&@#\\\/%?=~_|!:,.;]*[-a-z0-9+&@#\\\/%=~_|]\/i\",$website)) {\n    $websiteErr = \"無效的 URL\"; \n   }\n  }\n\n}\n\nfunction test_input($data) {\n  \/\/去除用戶輸入數(shù)據(jù)中不必要的字符(多余的空格、制表符、換行)\n  $data = trim($data);\n  \/\/刪除用戶輸入數(shù)據(jù)中的反斜杠(\\)\n  $data = stripslashes($data);\n  \/\/把特殊字符轉(zhuǎn)換為 HTML 實體\n  $data = htmlspecialchars($data);\n  return $data;\n}\n?>\n\n

      PHP 驗證實例<\/h2>\n

      * 必需的字段<\/span><\/p>\n\n\"> \n \n 姓名:\">\n * <?php echo $nameErr;?><\/span>\n

      \n 郵箱:\">\n * <?php echo $emailErr;?><\/span>\n

      \n 網(wǎng)址:\">\n <?php echo $websiteErr;?><\/span>\n

      \n \n<\/form>\n\n<?php\necho \"

      您的輸入:<\/h2>\";\necho $name;\necho \"
      \";\necho $email;\necho \"
      \";\necho $website;\necho \"
      \";\n?>\n\n<\/body>\n<\/html>\n<\/pre>\n\n

      I hope this article will help you learn PHP programming. <\/p>\n\n\n\n

      Articles you may be interested in:<\/h4>\n
        \n
      • Regular expressions commonly used for form validation in php<\/li>\n
      • php form validation implementation code<\/li>\n
      • Commonly used in PHP development Summary of the use of the three form validation functions<\/li>\n
      • How to use the three PHP form validation functions ISSET(), empty(), and is_numeric()<\/li>\n
      • php tp validation form and autofill function code<\/li>\n
      • Detailed explanation of form verification based on PHP Ajax<\/li>\n
      • Specific examples of using js for form verification on the PHP user registration page<\/li>\n
      • ThinkPHP form automatic submission verification example tutorial<\/li>\n
      • ThinkPHP Example of automatic form verification<\/li>\n
      • thinkPHP implements automatic form verification<\/li>\n<\/ul>\n

        <\/p>\n

        \nhttp:\/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>www.bkjia.com<\/span>true<\/span>http: \/\/www.bkjia.com\/PHPjc\/1105381.html<\/span>TechArticle<\/span>php programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w...<\/span>\n<\/div>\n
        <\/div>"}
        Table of Contents
        PHP programming must learn form verification every day, PHP programming form
        Articles you may be interested in:
        Home Backend Development PHP Tutorial PHP programming must learn form validation every day, PHP programming form_PHP tutorial

        PHP programming must learn form validation every day, PHP programming form_PHP tutorial

        Jul 12, 2016 am 08:58 AM
        php form

        PHP programming must learn form verification every day, PHP programming form

        This article explains the implementation method of PHP form verification through examples, and shares it with everyone for your reference. The specific content is as follows

        1.PHP form processing
        welcome.html

        <html>
        <body>
          <form action="welcome.php" method="post">
            Name: <input type="text" name="name"><br>
            E-mail: <input type="text" name="email"><br>
            <input type="submit">
          </form>
        </body>
        </html>

        welcome.php

        <html>
        <body>
        <!--PHP 超全局變量 $_GET 和 $_POST 用于收集表單數(shù)據(jù)(form-data)-->
        
        Welcome <&#63;php echo $_POST["name"]; &#63;><br>
        Your email address is: <&#63;php echo $_POST["email"]; &#63;>
        
        </body>
        </html>
        

        2. Complete example of PHP form verification

        <html>
        <head>
        </head>
        <body> 
        
        <&#63;php
        // 定義變量并設(shè)置為空值
        $nameErr = $emailErr = $websiteErr = "";
        $name = $email = $website = "";
        
        if ($_SERVER["REQUEST_METHOD"] == "POST") {
          if (empty($_POST["name"])) {
           $nameErr = "姓名是必填的";
          } else {
           $name = test_input($_POST["name"]);
           // 檢查姓名是否包含字母和空白字符
           //preg_match() 函數(shù)檢索字符串的模式,如果模式存在則返回 true,否則返回 false。
           if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
            $nameErr = "只允許字母和空格"; 
           }
          }
          
          if (empty($_POST["email"])) {
           $emailErr = "電郵是必填的";
          } else {
           $email = test_input($_POST["email"]);
           // 檢查電子郵件地址語法是否有效
           if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) {
            $emailErr = "無效的 email 格式"; 
           }
          }
           
          if (empty($_POST["website"])) {
           $website = "";
          } else {
           $website = test_input($_POST["website"]);
           // 檢查 URL 地址語法是否有效(正則表達(dá)式也允許 URL 中的斜杠)
           if (!preg_match("/\b(&#63;:(&#63;:https&#63;|ftp):\/\/|www\.)[-a-z0-9+&@#\/%&#63;=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) {
            $websiteErr = "無效的 URL"; 
           }
          }
        
        }
        
        function test_input($data) {
          //去除用戶輸入數(shù)據(jù)中不必要的字符(多余的空格、制表符、換行)
          $data = trim($data);
          //刪除用戶輸入數(shù)據(jù)中的反斜杠(\)
          $data = stripslashes($data);
          //把特殊字符轉(zhuǎn)換為 HTML 實體
          $data = htmlspecialchars($data);
          return $data;
        }
        &#63;>
        
        <h2>PHP 驗證實例</h2>
        <p><span class="error">* 必需的字段</span></p>
        <!--htmlspecialchars() 函數(shù)把特殊字符轉(zhuǎn)換為 HTML 實體。-->
        <form method="post" action="<&#63;php echo htmlspecialchars($_SERVER["PHP_SELF"]);&#63;>"> 
          <!--value:保留表單中的值-->
          姓名:<input type="text" name="name" value="<&#63;php echo $name;&#63;>">
          <span class="error">* <&#63;php echo $nameErr;&#63;></span>
          <br><br>
          郵箱:<input type="text" name="email" value="<&#63;php echo $email;&#63;>">
          <span class="error">* <&#63;php echo $emailErr;&#63;></span>
          <br><br>
          網(wǎng)址:<input type="text" name="website" value="<&#63;php echo $website;&#63;>">
          <span class="error"><&#63;php echo $websiteErr;&#63;></span>
          <br><br>
          <input type="submit" name="submit" value="提交"> 
        </form>
        
        <&#63;php
        echo "<h2>您的輸入:</h2>";
        echo $name;
        echo "<br>";
        echo $email;
        echo "<br>";
        echo $website;
        echo "<br>";
        &#63;>
        
        </body>
        </html>
        

        I hope this article will help you learn PHP programming.

        Articles you may be interested in:

        • Regular expressions commonly used for form validation in php
        • php form validation implementation code
        • Commonly used in PHP development Summary of the use of the three form validation functions
        • How to use the three PHP form validation functions ISSET(), empty(), and is_numeric()
        • php tp validation form and autofill function code
        • Detailed explanation of form verification based on PHP Ajax
        • Specific examples of using js for form verification on the PHP user registration page
        • ThinkPHP form automatic submission verification example tutorial
        • ThinkPHP Example of automatic form verification
        • thinkPHP implements automatic form verification

        www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1105381.htmlTechArticlephp programming must learn form verification every day, php programming form This article explains the implementation method of php form verification with examples, share For your reference, the specific content is as follows 1. PHP form processing w...
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