adding volume conversion page and functions

techlord001 · techlord001 · commit 7e40d9451b3e · 2021-05-05T11:39:06.000+01:00
diff --git a/includes/volume.php b/includes/volume.php
@@ -0,0 +1,29 @@
+<?php
+	require_once('units.php');
+
+	function convertToLiters($value, $fromUnit)
+	{
+		if (array_key_exists($fromUnit, VOLUME_UNITS)) {
+			return $value * VOLUME_UNITS[$fromUnit];
+		} else {
+			return "Unsupported unit";
+		}
+	}
+	
+	function convertFromLiters($value, $toUnit)
+	{
+		if (array_key_exists($toUnit, VOLUME_UNITS)) {
+			return $value / VOLUME_UNITS[$toUnit];			
+		} else {
+			return "Unsupported unit";
+		}
+	}
+	
+	function convertVolume($value, $fromUnit, $toUnit)
+	{
+		$literValue = convertToLiters($value, $fromUnit);
+		$newValue = convertFromLiters($literValue, $toUnit);
+
+		return $newValue;
+	}
+?>
diff --git a/volume.php b/volume.php
@@ -0,0 +1,104 @@
+<?php
+
+  require_once('includes/volume.php');
+	require_once('includes/camelCase.php');
+
+  // Default empty variables
+  $fromValue = '';
+  $fromUnit = '';
+  $toUnit = '';
+  $toValue = '';
+
+  /* Check conversion request on submit */
+  if ($_POST['submit']) {
+    $fromValue = $_POST['fromValue'];
+    $fromUnit = $_POST['fromUnit'];
+    $toUnit = $_POST['toUnit'];
+
+    $toValue = convertVolume($fromValue, $fromUnit, $toUnit);
+  }
+
+	$volumeUnits= array(
+		'cubic inches',
+		'cubic feet',
+		'UK gallons',
+		'UK quarts',
+		'UK pints',
+		'UK cups',
+		'UK ounces',
+		'UK tablespoons',
+		'UK teaspoons',
+		'US gallons',
+		'US quarts',
+		'US pints',
+		'US cups',
+		'US ounces',
+		'US tablespoons',
+		'US teaspoons',
+		'cubic centimeters',
+		'cubic meters',
+		'liters',
+		'milliliters'
+	);
+?>
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <title>Convert Volume</title>
+    <link href="styles.css" rel="stylesheet" type="text/css">
+  </head>
+  <body>
+
+  <div id="main-content">
+
+    <h1>Convert Volume</h1>
+
+    <form action="" method="post">
+
+      <div class="entry">
+        <label>From:</label>&nbsp;
+        <input type="text" name="fromValue" value="<?php { echo $fromValue;} ?>" />&nbsp;
+        <select name="fromUnit">
+					<?php
+						foreach ($volumeUnits as $unit) {
+							echo "<option value=\"" . camelCase($unit) . "\"";
+							if ($fromUnit == 'cubeInches') {
+								{
+									echo " selected";
+								}
+							}
+							echo ">" . ucwords($unit) . "</option>";
+						}
+					?>
+        </select>
+      </div>
+
+      <div class="entry">
+        <label>To:</label>&nbsp;
+        <input type="text" name="toValue" value="<?php { echo $toValue;} ?>" />&nbsp;
+        <select name="toUnit">
+					<?php
+						foreach ($volumeUnits as $unit) {
+							echo "<option value=\"" . camelCase($unit) . "\"";
+							if ($toUnit == 'cubeInches') {
+								{
+									echo " selected";
+								}
+							}
+							echo ">" . ucwords($unit) . "</option>";
+						}
+					?>
+        </select>
+
+      </div>
+
+      <input type="submit" name="submit" value="Submit" />
+    </form>
+
+    <br/>
+    <a href="index.php">Return to menu</a>
+
+  </div>
+</body>
+</html>
