Month Spell-Check

<?php
$month = strtolower($_POST['month']);
switch ($month)
{
    case "january":
        echo "<h2>There are <strong>31 Days</strong> in January</h2>";
        break;
    case "february":
        echo "<h2>There are <strong>28 Days</strong> in February</h2>";
        break;
    case "march":
        echo "<h2>There are <strong>31 Days</strong> in March</h2>";
        break;
    case "april":
        echo "<h2>There are <strong>30 Days</strong> in April</h2>";
        break;
    case "may":
        echo "<h2>There are <strong>31 Days</strong> in May</h2>";
        break;
    case "june":
        echo "<h2>There are <strong>30 Days</strong> in June</h2>";
        break;
    case "july":
        echo "<h2>There are <strong>31 Days</strong> in July</h2>";
        break;
    case "august":
        echo "<h2>There are <strong>30 Days</strong> in August</h2>";
        break;
    case "september":
        echo "<h2>There are <strong>31 Days</strong> in September</h2>";
        break;
    case "october":
        echo "<h2>There are <strong>30 Days</strong> in October</h2>";
        break;
    case "november":
        echo "<h2>There are <strong>31 Days</strong> in November</h2>";
        break;
    case "december":
        echo "<h2>There are <strong>30 Days</strong> in December</h2>";
        break;
    case "jaunary":
    case "jarnauy":
    case "janary":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="January" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>January</strong>?</a></h4>
        </form>';
        break;
    case "febuary":
    case "feburary":
    case "febarary":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="February" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>February</strong>?</a></h4>
        </form>';
        break;
    case "marh":
    case "marc":
    case "mrch":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="March" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>March</strong>?</a></h4>
        </form>';
        break;
    case "abril":
    case "aprl":
    case "apral":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="April" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>April</strong>?</a></h4>
        </form>';
        break;
    case "mahy":
    case "my":
    case "ay":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="May" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>May</strong>?</a></h4>
        </form>';
        break;
    case "juno":
    case "jun":
    case "joon":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="June" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>June</strong>?</a></h4>
        </form>';
        break;
    case "jul":
    case "julie":
    case "jly":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="July" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>July</strong>?</a></h4>
        </form>';
        break;
    case "agust":
    case "augst":
    case "augist":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="August" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>August</strong>?</a></h4>
        </form>';
        break;
    case "septembr":
    case "septimber":
    case "siptember":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="September" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>September</strong>?</a></h4>
        </form>';
        break;
    case "oktober":
    case "ahtober":
    case "octobr":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="October" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>October</strong>?</a></h4>
        </form>';
        break;
    case "novamber":
    case "novembir":
    case "novembr":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="November" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>November</strong>?</a></h4>
        </form>';
        break;
    case "decenber":
    case "dicember":
    case "decembr":
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>
        <form method="post" id="monthForm">
            <input type="hidden" name="month" value="December" />
            <h4><a onclick="document.forms[\'monthForm\'].submit();">Did you mean <strong>December</strong>?</a></h4>
        </form>';
        break;
    default:
        echo '<h2>"'.$_POST['month'].'" is not a valid month.</h2>';
}
?>