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How to validate an email address in PHP with javascript?

+4 votes
367 views
How to validate an email address in PHP with javascript?
posted Jan 21, 2016 by Vrije Mani Upadhyay

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2 Answers

+2 votes
 
Best answer
<!DOCTYPE HTML> 
<html>
<head>
<style>
.error {color: #FF0000;}
</style>
</head>
<body> 

<?php
// define variables and set to empty values
$nameErr = $emailErr = $genderErr = $websiteErr = "";
$name = $email = $gender = $comment = $website = "";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
   if (empty($_POST["name"])) {
     $nameErr = "Name is required";
   } else {
     $name = test_input($_POST["name"]);
     // check if name only contains letters and whitespace
     if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
       $nameErr = "Only letters and white space allowed"; 
     }
   }

   if (empty($_POST["email"])) {
     $emailErr = "Email is required";
   } else {
     $email = test_input($_POST["email"]);
     // check if e-mail address is well-formed
     if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
       $emailErr = "Invalid email format"; 
     }
   }

   if (empty($_POST["website"])) {
     $website = "";
   } else {
     $website = test_input($_POST["website"]);
     // check if URL address syntax is valid
     if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) {
       $websiteErr = "Invalid URL"; 
     } 
   }

   if (empty($_POST["comment"])) {
     $comment = "";
   } else {
     $comment = test_input($_POST["comment"]);
   }

   if (empty($_POST["gender"])) {
     $genderErr = "Gender is required";
   } else {
     $gender = test_input($_POST["gender"]);
   }
}

function test_input($data) {
   $data = trim($data);
   $data = stripslashes($data);
   $data = htmlspecialchars($data);
   return $data;
}
?>

<h2>PHP Form Validation Example</h2>
<p><span class="error">* required field.</span></p>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> 
   Name: <input type="text" name="name">
   <span class="error">* <?php echo $nameErr;?></span>
   <br><br>
   E-mail: <input type="text" name="email">
   <span class="error">* <?php echo $emailErr;?></span>
   <br><br>
   Website: <input type="text" name="website">
   <span class="error"><?php echo $websiteErr;?></span>
   <br><br>
   Comment: <textarea name="comment" rows="5" cols="40"></textarea>
   <br><br>
   Gender:
   <input type="radio" name="gender" value="female">Female
   <input type="radio" name="gender" value="male">Male
   <span class="error">* <?php echo $genderErr;?></span>
   <br><br>
   <input type="submit" name="submit" value="Submit"> 
</form>

<?php
echo "<h2>Your Input:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>

</body>
</html>
answer Jan 21, 2016 by Shivaranjini
+2 votes

This is our function at QueryHome

function queryhome_email_validate($email)
{
   return preg_match("/^[\-\!\#\$\%\&\'\*\+\/\=\?\_\`\{\|\}\~a-zA-Z0-9\.\^]+\@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\.\-]+$/", $email) ? true : false;
}
answer Jan 21, 2016 by Salil Agrawal
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0 votes

Write validation functions and modify the onSubmit event Handler in the form code to validate the following form fields:

  1. Phone Number
    • Must be entered
    • Must be below format
    XXX-XXX-XXXX
    XXX.XXX.XXXX
    XXX XXX XXXX
0 votes

As per my understanding of interpreted language is scripting(interpreted) language is the language which can executed by CPU straight away without any need of compilation are classified as scripting language

Now if i take example of JavaScript , it does not requires explicit compilation from developer. But browser which interprets actually converts it in to machine instruction which CPU can execute.

So in a way it is also a compiled language though compilation is not required by developer explicitly but browser does it internally. Is n't it ?

Same is the case with PHP.

+2 votes

Is there any way so that i will get to know about my variable is a number or not without using Javascript?

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