<?php
$text = $_GET['text'];
$red = getHex($_GET['red']);
$green = getHex($_GET['green']);
$blue = getHex($_GET['blue']);
$color = '#' . $red . $green . $blue;
$nth = $_GET['nth'];
var_dump($color);
var_dump('738f0d');
echo "<p>";
for ($i = 1; $i <= strlen($text); $i++) {
if ($i % $nth === 0) {
echo "<span style=\"color: {$color}\">" . htmlspecialchars($text[$i - 1]) . "</span>";
} else {
echo htmlspecialchars($text[$i - 1]);
}
}
echo "</p>";
function getHex($color)
{
$color = dechex($color);
var_dump($color);
if (strlen($color) === 1) {
$color .= $color;
}
return $color;
}
</h2>
</header>
<form method="POST">
<label for="red">Red: </label>
<input name="red" id="red" type="text" class="rgb-input" maxlength="3">
<label for="green">Green: </label>
<input name="green" id="green" type="text" class="rgb-input" maxlength="3">
<label for="blue">Blue: </label>
<input name="blue" id="blue" type="text" class="rgb-input" maxlength="3">
<input type="submit" name="submit" value="Convert to Hex" class="convert-btn">
</form>
<div class="result">
<?php
if (isset($_POST["red"]) && isset($_POST["green"]) && isset($_POST["blue"])) {
if (isValidInput($_POST["red"]) && isValidInput($_POST["green"]) && isValidInput($_POST["blue"])) {
echo "#" . getHex($_POST["red"]) . getHex($_POST["green"]) . getHex($_POST["blue"]);
} else {
echo "Please enter valid input:<br>RGB values should be from 0 to 255 only!";
}
}
function isValidInput($rgb)
{
if (!is_numeric($rgb)) {
return false;
}
return $rgb >= 0 && $rgb <= 255;
}
function getHex($rgb)
{
$result = strtoupper(dechex($rgb));
if (strlen($result) == 1) {