<?php
if (isset($_GET["submit"])) {

    echo "<table border='2'>";
    echo "<tr>";
    echo "<td style='background-color: orange;'>Name</td>";
    echo "<td align='right'>"; if(isset($_GET["name"])) {echo htmlspecialchars($_GET["name"]);}; echo "</td>";
    echo "</tr>";
    echo "<tr>";
    echo "<td style='background-color: orange;'>Phone number</td>";
    echo "<td align='right'>"; if(isset($_GET["phone"])) {echo htmlspecialchars($_GET["phone"]);}; echo "</td>";
    echo "</tr>";
    echo "<tr>";
    echo "<td style='background-color: orange;'>Age</td>";
    echo "<td align='right'>"; if(isset($_GET["age"])) {echo htmlspecialchars($_GET["age"]);}; echo "</td>";
    echo "</tr>";
    echo "<tr>";
    echo "<td style='background-color: orange;'>Address</td>";
    echo "<td align='right'>"; if(isset($_GET["address"])) {echo htmlspecialchars($_GET["address"]);}; echo "</td>";
    echo "</tr>";
    echo "</table>";
} else {
    echo "<form>
    Name: <input type=\"text\" name=\"name\"><br />
    Phone: <input type=\"text\" name=\"phone\"><br />
    Age: <input type=\"text\" name=\"age\"><br />
    Address: <input type=\"text\" name=\"address\"><br />
    <input type=\"submit\" name=\"submit\" value=\"Submit\">
</form>";
}