<?php
// Get the user's input from the USSD gateway (e.g., *123*1*1#)
$userInput = $_GET['input'];
// Define the menu options and their corresponding USSD codes
$mainMenu = [
'1' => 'Buyer',
'2' => 'Farmer',
'3' => 'About FAMASO',
];
$buyerMenu = [
'1' => 'View Orders',
'2' => 'Place an Order',
'3' => 'Contact Support',
'00' => 'Home',
];
$farmerMenu = [
'1' => 'View Farm Stats',
'2' => 'Update Farm Info',
'3' => 'Contact Support',
'00' => 'Home',
];
$aboutMenu = [
'1' => 'About Us',
'00' => 'Home'
];
// Function to display a menu and its options
function displayMenu($menu)
{
$response = "Welcome to Famaso.\n";
foreach ($menu as $key => $option) {
$response .= "$key. $option\n";
}
echo $response;
}
// Function to handle buyer-specific logic
function handleBuyerMenu($option)
{
switch ($option) {
case '1':
echo "You selected View Orders. Here are your orders:\n";
// Implement logic to display orders
break;
case '2':
echo "You selected Place an Order. Please follow the instructions to place an order.\n";
// Implement logic to place an order
break;
case '3':
echo "You selected Contact Support. Please contact our support team at [email protected].\n";
// Implement logic to contact support
break;
case '00':
echo "Returning to the Home/Main Menu.\n";
break;
default:
echo "Invalid option. Please try again.\n";
break;
}
}
// Function to handle farmer-specific logic
function handleFarmerMenu($option)
{
switch ($option) {
case '1':
echo "You selected View Farm Stats. Here are your farm statistics:\n";
// Logic to display farm stats
function displayFarmStats()
{
$farmName = "ABC Dairy Farm";
$totalCows = 50;
$todayMilkProduction = "500 liters";
$thisMonthMilkProduction = "15000 liters";
echo "Farm Name: $farmName\n";
echo "Total Cows: $totalCows\n";
echo "Milk Production (today): $todayMilkProduction\n";
echo "Milk Production (this month): $thisMonthMilkProduction\n";
// Add more farm statistics as needed
}
break;
case '2':
echo "You selected Update Farm Info. Please update your farm information:\n";
// Logic to update farm info
function displayFarmInfo()
{
$farmName = "ABC Dairy Farm";
$ownerName = "John Doe";
$totalCows = 50;
$location = "Farmington, USA";
$milkProduction = "500 liters/day";
$farmSize = "100 acres";
echo "Farm Name: $farmName\n";
echo "Owner: $ownerName\n";
echo "Total Cows: $totalCows\n";
echo "Location: $location\n";
echo "Daily Milk Production: $milkProduction\n";
echo "Farm Size: $farmSize\n";
}
break;
case '3':
echo "You selected Contact Support. Please contact our support team at .\n";
// Logic for contact support
$supportMobileNumber = '0726993619';
echo "You selected Contact Support. Please contact our support team at $supportMobileNumber.\n";
break;
case '00':
echo "Returning to the Home/Main Menu.\n";
break;
default:
echo "Invalid option. Please try again.\n";
break;
}
}
function handleAboutMenu($option)
{ switch ($option) {
case '1':
echo "In this online platform buyers will be able to interact with farmers in easy way. They will be able to get their required products from a variety of farmers they prefer\n";
break;
case '00':
echo "Returning to the Home/Main Menu.\n";
break;
default:
echo "Invalid option. Please try again.\n";
break;
}
}
// Parse the user's input
$inputParts = explode('*', $userInput);
// Determine the menu level
$menuLevel = count($inputParts) - 1;
// Check the menu level and execute the appropriate logic
if ($menuLevel == 1) {
// Main Menu
if (isset($mainMenu[$inputParts[1]])) {
displayMenu($menuLevel == 1 ? $mainMenu : []);
} else {
echo "Invalid option. Please try again.\n";
}
} elseif ($menuLevel == 2) {
// Buyer or Farmer Menu
$selectedOption = $inputParts[2];
if ($inputParts[1] == '1' && isset($buyerMenu[$selectedOption])) {
handleBuyerMenu($selectedOption);
} elseif ($inputParts[1] == '2' && isset($farmerMenu[$selectedOption])) {
handleFarmerMenu($selectedOption);
} else {
echo "Invalid option. Please try again.\n";
}
} else {
echo "Error while running the USSD code.\n";
}
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If, If-else, Nested-Ifs are used when you want to perform a certain set of operations based on conditional expressions.
if(conditional-expression){
//code
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//code if condition is true
} else {
//code if condition is false
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if(condition-expression1) {
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elseif(condition-expression3) {
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Switch is used to execute one set of statement from multiple conditions.
switch(conditional-expression) {
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For loop is used to iterate a set of statements based on a condition.
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// code
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foreach ($array as $key => $element-value) {
//code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while(condition) {
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Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
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} while (condition);
Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity.
function function_name(parameters) {
//code
}
function_name (parameters)