how to validate phone number in php procedural programming code example
Example 1: how to validate phone number in php procedural programming
<?php
if(isset($_POST['submit'])) {
//include validation class
//assign post data to variables
$name = trim($_POST['name']); // Storing username
$email = trim($_POST['email']); // Storing email address
$number= trim($_POST['number']); // storing the phone number
}
?>
Example 2: how to validate phone number in php procedural programming
<html>
<head>
<title>Validation Form</title>
</head>
<body>
<form id="contact_form" method="post" action="."> <br />
Label <input type="text" name="name" class="textfield" value="" /> <br />
Email <input type="text" name="email" class="textfield" value="" /> <br />
Phone Number <input type="text" name="number" class="textfield" value="" /> <br />
<p><input type="submit" name="submit" class="button" value="Submit" /></p>
</form>
</body>
</html>
Example 3: how to validate phone number in php procedural programming
if(empty($name) && empty($number) && empty($email))
{
echo "All fields are compulsory"
}
Example 4: how to validate phone number in php procedural programming
if (preg_match("/^[a-z0-9_]+$/i", $name) )
{
return true;
}
else
{
echo "Enter valid username"
}
Example 5: how to validate phone number in php procedural programming
if(strlen($name) >=5 && strlen($name)<=10)
Example 6: how to validate phone number in php procedural programming
<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"]);
}
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"]);
}
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 $data;
}
?>
<h2>Absolute classes registration</h2>
<p><span class = "error">* required field.</span></p>
<form method = "post" action = "<?php
echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
<table>
<tr>
<td>Name:</td>
<td><input type = "text" name = "name">
<span class = "error">* <?php echo $nameErr;?></span>
</td>
</tr>
<tr>
<td>E-mail: </td>
<td><input type = "text" name = "email">
<span class = "error">* <?php echo $emailErr;?></span>
</td>
</tr>
<tr>
<td>Time:</td>
<td> <input type = "text" name = "website">
<span class = "error"><?php echo $websiteErr;?></span>
</td>
</tr>
<tr>
<td>Classes:</td>
<td> <textarea name = "comment" rows = "5" cols = "40"></textarea></td>
</tr>
<tr>
<td>Gender:</td>
<td>
<input type = "radio" name = "gender" value = "female">Female
<input type = "radio" name = "gender" value = "male">Male
<span class = "error">* <?php echo $genderErr;?></span>
</td>
</tr>
<td>
<input type = "submit" name = "submit" value = "Submit">
</td>
</table>
</form>
<?php
echo "<h2>Your given values are as:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>
</body>
</html>
Example 7: how to validate phone number in php procedural programming
if((preg_match("/[^0-9]/", '', $str)) && strlen($str) == 10)
{
echo "Invalid phone number
}
Example 8: how to validate phone number in php procedural programming
<?php
echo '<p>Hello I am PHP</p>';
?>
Example 9: how to validate phone number in php procedural programming
<?php
$reg = '/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/';
if (preg_match($reg, $email)) {
echo $email . \" Email Id is accepted.\";
} else {
echo $email . \"Invalid Email ID.\";
}
?>