112 lines
3.9 KiB
PHP
112 lines
3.9 KiB
PHP
<?php
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include "./conversions.php";
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?>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<link rel="stylesheet" href="./style.css">
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<title>HexDecBin Calc</title>
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</head>
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<body>
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<div class="inputs">
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<form action="index.php" method="get">
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<?php
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session_start();
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$bin = 0;
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$dec = 0;
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$hex = 0;
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$new = false;
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if (!isset($_GET['binary']) ||
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!isset($_GET['decimal']) ||
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!isset($_GET['hexadecimal'])) {
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$new = true;
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}
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if (!isset($_SESSION['bin']) ||
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!isset($_SESSION['dec']) ||
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!isset($_SESSION['hex'])) {
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$_SESSION['bin'] = 0;
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$_SESSION['dec'] = 0;
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$_SESSION['hex'] = 0;
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}
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if (!$new) {
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$last_bin = $_SESSION['bin'];
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$last_dec = $_SESSION['dec'];
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$last_hex = $_SESSION['hex'];
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$bin = $_GET['binary'];
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$dec = $_GET['decimal'];
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$hex = $_GET['hexadecimal'];
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if ($bin == 0 && $dec == 0) {
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$bin = hex_to_binary($hex);
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$_SESSION['bin'] = $bin;
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$dec = hex_to_decimal($hex);
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$_SESSION['dec'] = $dec;
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$_SESSION['hex'] = $hex;
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} else if ($bin == 0 && $hex == 0) {
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$bin = decimal_to_binary($dec);
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$_SESSION['bin'] = $bin;
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$_SESSION['dec'] = $dec;
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$hex = decimal_to_hex($dec);
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$_SESSION['hex'] = $hex;
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} else if ($dec == 0 && $hex == 0) {
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$_SESSION['bin'] = $bin;
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$dec = binary_to_decimal($bin);
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$_SESSION['dec'] = $dec;
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$hex = binary_to_hex($bin);
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$_SESSION['hex'] = $hex;
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}
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else {
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if ($bin == $last_bin && $dec == $last_dec && $hex != $last_hex) {
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$bin = hex_to_binary($hex);
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$_SESSION['bin'] = $bin;
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$dec = hex_to_decimal($hex);
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$_SESSION['dec'] = $dec;
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$_SESSION['hex'] = $hex;
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} else if ($bin == $last_bin && $hex == $last_hex && $dec != $last_dec) {
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$bin = decimal_to_binary($dec);
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$_SESSION['bin'] = $bin;
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$_SESSION['dec'] = $dec;
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$hex = decimal_to_hex($dec);
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$_SESSION['hex'] = $hex;
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} else if ($dec == $last_dec && $hex == $last_hex && $bin != $last_bin) {
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$_SESSION['bin'] = $bin;
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$dec = binary_to_decimal($bin);
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$_SESSION['dec'] = $dec;
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$hex = binary_to_hex($bin);
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$_SESSION['hex'] = $hex;
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} else {
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$bin = 0;
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$dec = 0;
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$hex = 0;
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}
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}
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}
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?>
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<div>
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<label for="binary">Binary: </label>
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<input type="text" id="binary" name="binary" value="<?php echo $bin; ?>">
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</div>
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<div>
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<label for="decimal">Decimal: </label>
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<input type="text" id="decimal" name="decimal" value="<?php echo $dec; ?>">
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</div>
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<div>
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<label for="hexadecimal">Hexadecimal: </label>
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<input type="text" id="hexadecimal" name="hexadecimal" value="<?php echo $hex; ?>">
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</div>
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<div>
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<input class="submit" type="submit">
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</div>
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</form>
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</div>
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</body>
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</html>
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