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Validating The Form Values

Tutorial Title: Validating The Form Values
Course: PHP
Instructor: Muhammad Samim




1. Understanding of Different Validation
<?php

if(isset($_POST["click"])){
    $anyNameOfVariableForUserName = $_POST["anyNameForEmail"];
    $anyNameOfVariableForPassword = $_POST["anyNameForPassword"];
    $validEmail  = array("Muhammad","Samim","Akhtar","Akbar"); //Array of valid names
    $minimum = 3;
    $maximum = 15;
    if (strlen($anyNameOfVariableForUserName) < $minimum) //strlen will check the length of the string
    {
        echo "Email Error: Minimum characters are 5";
    }
 
    elseif (strlen($anyNameOfVariableForUserName) > $maximum) //strlen will check the length of the string
    {
        echo "<br>Email Error: Maximum characters are 12";
    }
    else {
        echo "You are logged in successfully";
    }
if (strlen($anyNameOfVariableForPassword) < $minimum) //strlen will check the length of the string
{
    echo "<br>Password Error: Password length must be more than 6 characters!";
}
    elseif(strlen($anyNameOfVariableForPassword) > $maximum) //strlen will check the length of the string
    {
        echo "<br>Password Error: Password lenghth must be less than 12 characters!";
    }
 
    if(in_array($anyNameOfVariableForUserName, $validEmail)) //Checking name if a name is entered is already available is array
    {
        echo "<br>Valid User Enterd!";
    }
    else{
        echo "<br>Invalid User!";;
    }

}
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
 
   <form action="22validatingFormValue.php" method="post">
     
    <br><input type="text" placeholder="Email" name="anyNameForEmail">
    <br><input type="password" placeholder="Password" name="anyNameForPassword">
    <br><input type="submit" name="click">
   </form>
 
</body>
</html>

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